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Hyperion Vengeance 280 FPV Racer

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Written by Greg Gimlick
A durable and inexpensive racing machine
Product Review
Photos by the author
As seen in the May 2016 issue of
Model Aviation.




Specifications

Model type: Electric RTF quadcopter
Skill level: Intermediate to advanced
Propeller size: 6040 clockwise and counterclockwise
Size: 250 racing class
Diagonal: 280mm
Length: 8.5 inches
Width: 10 inches
Height: 3.19 inches without antenna or 4.45 inches with antenna
Weight: 20.7 ounces with camera and battery
Power system: Four 2,204 to 2,300 Kv high-output brushless motors; four Custom Compact BL-Heli 20-amp ESCs
Flight battery: Hyperion G6 HV 60C to 80C 3S 1,800 mAh LiPo
Flight controller: NAZE Spec 32-bit Flight Controller 7DOF (with BMP sensor)
Video transmitter: 5.8 GHz autoscan 32-channel VTX w/race-band VTX selectable 20 milliwatt/200 milliwatt output and tuned 5.8 GHz; CloverLeaf Skew-Planar antenna
Camera: 600TVl 1/3-inch CMOS high-quality FPV camera
Flight duration: Five-plus minutes
Street price: $299.99

Pluses
• Fully assembled plug and play.
• Programmable frequencies with LED indicators on VTX.
• Remote controllable, stabilized camera gimbal.
• 8° forward-tilt motor mounts.
• Tough carbon-fiber construction.
• Ready for optional GPS modules.
• Low-voltage alarm.
• Terrific flight characteristics.
• Incredible crash survivability.

Minuses
• Requires PWM input to remotely control gimbal angle.
• Fidgety on-screen display programming with no documentation.


Product Review

I’ve gotten the bug for 250 FPV racing and my expectations were high when I ordered the Vengeance 280. I’ve had good experiences with Hyperion motors in the past, so the bar was already high when I opened the box. I was not disappointed when I saw the contents. It was obvious right from the start that it was as close to being ready to fly as possible.

Everything was nestled securely in custom-cut foam packaging, so the box can double as a carrying case. The assembly was neat and tidy. No wires needed to be secured or tidied before going to the field. Everything was sandwiched between the top and bottom frames so the pieces would be protected from whatever abuse I might inflict upon the aircraft. My first impression was good!


Assembly

There isn’t any assembly to be done other than to secure the camera platform and install your receiver. The camera/gimbal assembly is attached to a carbon-fiber platform that attaches to the top frame of the Vengeance with five rubber isolators.

This is a standard method for mounting a camera and I recommend adding a couple of small zip ties for insurance. I run these through the center of the isolators and leave them loose enough to not interfere with the purpose of the rubber mounts. The purpose is simply to keep the platform from coming completely loose in the event of a crash.

If you don’t take this precaution and it does come loose, the camera will pull the connector out by the wires and it could be damaged. As with anything, you should check the security of all of the screws, and there are many of them.

Adding your receiver is the next step. The decision here is whether you’re going to use a satellite or full receiver. That might be determined by whether you want to remotely adjust the angle of the camera gimbal. That requires a PWM signal as opposed to the PPM signal from just using the satellite.

I tried mine both ways and ended up using a full receiver so I could change the camera if I wanted. There are connections provided for Spektrum satellites, Futaba S.Bus, and a standard receiver block. A connector block is also provided.

The manual lists all of the suggested settings for control throws, etc., for each major radio brand. If yours isn’t listed, it’s easy to interpret the data and apply it to your own situation.




The author’s flight battery is secured to the bottom of the quadcopter with Velcro and “one wrap.”




The connectors for the Spektrum satellite or Futaba S.Bus system are easily accessible and clearly labeled on the flight controller.


Layout

The flight controller is a nicely designed device that has everything clearly labeled and laid out in an orderly fashion. The instruction manual has an excellent picture of the board, labeling all the pertinent items (check for updates because the first manual had a couple of misprints).

At first glance, it appears that it’s an “all-in-one” board, but that’s not the case. I see that as a plus for the Vengeance 280. It does incorporate the on-screen display board, but the video transmitter (VTX) board is a separate assembly mounted above and to the rear of the quadcopter.

The ESCs are mounted inside of the carbon-fiber arms and connected to each corner of the flight controller with plugs. No soldering is necessary if you need to replace an ESC.

All dip switches and connectors are clearly labeled and accessible through cutouts in the frames. In other words, you don’t have to remove 50 screws to make simple changes! Whoever designed this had apparently experienced the frustration of having to completely disassemble a quad to make a change. Nicely done!

The VTX is a highlight of this machine. As it comes, it’s set to transmit a 25-milliwatt signal, but that can be changed to 200 milliwatts by cutting a jumper. The biggest feature for me was finding a set of dip switches to change the frequency and LEDs to indicate the settings. More often than not, these transmitters come with no obvious way to determine the exact frequency it’s transmitting. No guessing here!




The Flight Controller is laid out and clearly labeled in the manual.


CleanFlight

The Vengeance 280 is based on a NAZE Spec 32-bit Flight Controller 7DOF (with BMP sensor) and is ready for tweaking with the CleanFlight GUI interface. Don’t change any of the default settings before you test-fly your machine. It has been set to fly as designed and I found that to be adequate. There are some suggestions in the manual if you want to increase the speed or sensitivity after your initial flights. The only things you’ll need to initially adjust are the settings for your particular receiver.

If you decide to use a satellite instead of the full receiver, you’ll need to bind it using the command line and not bind it with an external receiver, then connect it to the Vengeance. Aside from that, everything is straightforward. Ensure that your channel mapping is correct and see that everything moves the appropriate lines in the receiver tab of the GUI.

Remember to use the “save” function at the bottom of each page before moving to another tab. If you don’t, your changes won’t be saved. Do all of your programming with the propellers removed from the Vengeance 280. Remember to return the dip switches to the Flight Mode setting before going to the field.




The Vengeance 280 is ready to go while the iMaxRC 150 charges the HV LiPo battery pack.





The screen of the iMaxRC 150 charger displays a lot of information while charging the Hyperion G6 HV LiPo batteries.



Flying

I always love the first flight on a new machine. I don’t know why. I guess it’s the anticipation and excitement of something new. This tiny machine flies much larger than it is. I have a habit of doing my test flights between my house and my neighbor’s, with permission, in an area also known as “the wind tunnel.”

It doesn’t matter how light the wind is, it seems to funnel through there and it makes for challenging conditions. That’s why I like it. My initial test hops there proved it to be stable and ready for a trip to the field.

From the moment I flew the Vengeance up into a hover, I felt it was going to be a great flier. The motors are tilted forward 8°, so be aware of that when it comes off of the ground. It wants to go forward. When you hover, you’ll use a significant amount of aft stick to keep it in place, but that means forward flight is that much easier.

Three flight modes are set as defaults. Angle mode is for beginners and features automatic level stabilization. The Angle + Baro mode is also for beginners and features automatic level stabilization. The integrated BMP sensor will automatically try to hold the flight altitude. Manual mode is for advanced use to perform rolls and flips. It disables automatic level stabilization.

You should have determined that each mode works on a three-position switch when you were setting up in CleanFlight mode. I didn’t see much difference between the first two modes, but in the manual setting, it’s sporty, so save it until you’re ready.

I made several flights simply flying around to get a feel for the machine. During that time, a couple of friends were taking FPV rides using their Fat Shark and Headplay goggles. I was having so much fun flying the Vengeance that I was hesitant to go “under the hood.”

This machine is small and fast, so it will get away from you in a hurry. At one point when I was flying for the video camera, I did a speed run, popped up at the end of the field to do a turnaround, and lost it in the sun.

A friend, who was riding along with me and wearing his Headplay goggles, was able to see where it was and how it was pointing so he guided me back to a point where I was able to see the aircraft again and recover. What a cool experience that was!

It also points to the excellent flight rogramming of the various modes. I flipped it into Mode 2 which helped me stabilize it in a high hover while my friend guided me back.

Flying the Vengeance with FPV is exciting! The video quality of the goggles was good, with minimal lining or drops. I have proven its crash survivability many times when I got a little too frisky or simply disoriented. So far, the only damage has been a broken propeller. My camera platform came loose during one crash, but the zip ties kept it from pulling the wires loose from the connector.


Conclusion

I couldn’t be happier with my Vengeance! There are many 250-class racers to choose from, and I did plenty of research before buying this one. I was glad I chose one with an integrated on-screen display and onboard VTX with a stabilized gimbal.

The day I test-flew mine, two people at the field placed orders for theirs. It’s hard to beat the quality of the build and flight performance at this price point. I think Hyperion has a real winner with the Vengeance 280!
—Greg Gimlick
maelectrics@gimlick.com


Bonus Video


Manufacturer/Distributor

Hyperion/Empire Hobby
(480) 982-0909
www.empirerc.com





Arvada Associated Modelers fabric runway

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Written by Tony Stillman
AMA club rolls up their sleeves and rolls out a new runway
Monthly AMA News Column
Photos by Jack Pitcher
As seen in the May 2016 issue of
Model Aviation.


Hi, again! By the time you read this, flying season will be ramping up with lots of events and activities across the country. I hope you have your new aircraft completed and are ready for some long, fun days at the flying field!

Several RC clubs across the country have been improving their flying sites by adding a geotextile (fabric) runway. This could be a new runway for foamies, or a full runway for all types of models.

AMA recently added a geotextile runway to the International Aeromodeling Center in Muncie, Indiana, at Site 8 (a park-flyer-type site at the south end of the property), and behind the National Model Aviation Museum.

The material was provided by US Fabrics, and is called Aeromodeling Geotextile 230. Find more information about this material on the company’s website at www.usfabricsinc.com/products/us-230-aeromodeling-geotextile. You can learn more and see how we use this material at AMA in a video below.



Here is a story about the Arvada Associated Modelers RC club in Colorado and its addition of a Control Line (CL) circle using geotextile. This is something that many RC clubs could add to allow the CL fliers a place to fly. Something worth thinking about …

Flying circle improvements were accomplished in the fall of 2015 at the CL site of the Arvada Associated Modelers RC club complex on the west side of Denver. This circle has been in use for a number of years and its surface consists of compacted “crusher fines,” a very fine rock chip material that is the leftover byproduct of rock-crushing operations. The Arvada club site is on the grounds of a sand and gravel company, so the material was readily available.

Through the efforts of Chris and Linda Brainard, who currently serve on the club’s board of directors, and Jerry Higgins, a proposal was developed to cover the existing flying surface with a doughnut of geotextile material. The geotextile material is used in other areas of the RC site, and enough was available to complete this project. Chris, Linda, and Jerry have been active in support of RC events and work parties, so it was hoped that reciprocal support would be available to help with this labor-intensive project.

A couple of work parties were scheduled. The first job was to add an additional layer of fresh crusher fines to smooth the surface. This was spread by a dump truck around the circle edges. This had to be shoveled and raked into place. It was a labor-intensive day for only four of us CL fliers. Some trips around the circle with pickup trucks, followed by several days of rain, compacted and smoothed the area.

At the next work party, we were relieved and gratified to have 20 club members show up to help get this work done. It was a nice day and things went smoothly. We were able to get the entire job done in slightly more than two hours. The spirit of cooperation among club members worked for us that day.

The inaugural Ringmaster Fly-A-Thon followed on October 9 and 10, 2016, as the Arvada Associated Modelers held the event on the newly upgraded CL circle. Chris and Linda hosted the event with the help of Jerry, Keith McMahan, and Jack Pitcher.




Jerry Higgins finishes raking out the new crusher fines in preparation for the geotextile fabric work party. This was a tiring day of shovel and rake work for the CL flyers.




A pit area and a worktable were added to finish the project.




Here’s a view of the Ringmaster pit area with the administration and food tents behind. We had a good crowd. Quite a few were RC fliers from within the club. Some had flown CL before and some had not. It was fun to watch. A few holes were punched in the ground.



The following is an excerpt from the report that Linda filed with our AMA District IX associate vice president and the Brotherhood of the Ring.



“It was a great time had by all! There were eight people who had not flown Control Line since the 1950s. The last time George Baxter flew was in 1956 on a parade field in South Korea.

“There was only one flier who got dizzy and had to get down on the ground before he fell down. All of the others walked off the field looking just a little tipsy!

“There were two guys who brought their electric Ringmasters and flew at the same time. Our oldest pilots started from age 84, through 79, 76, and 73, to our youngest pilots at ages 11, 9, 7, and 5! With 12 Ringmaster airplanes, we had 25 pilots, seven who soloed, and 20 flights put up by females for a grand total of 95 flights over the two-day event.”

—Tony Stillman
fsac@modelaircraft.org


Bonus Video




Helimax Voltage 500 3D

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Written by Chris Mulcahy
Take your quad experience to the extreme
Abridged product review
Photos by the author
Read the full product review in the May 2016 issue of
Model Aviation.


Specifications

Model type: Receiver-ready quadcopter
Size: 19.7 inches (500mm)
Width: 14.9 inches
Blade length: 8.9 inches
Weight: 32 ounces without battery
Motors: Four 1,400 Kv reversible brushless
Needed to complete: Five-channel radio/receiver; three- to four-cell LiPo battery and charger
Price: $429.99

Pluses

• Orientation-friendly canopy design.
• Built-in bailout feature.
• Multiple options for flight battery.
• Spare propeller set included in the box.
• Power—and plenty of it.

Minus

• Motor mounts might not handle crashes well.


Abridged Product Review

Quadcopters are becoming more popular by the day. Love them or hate them, they are here to stay! I’m sure by now that we are all familiar with camera-toting drones cruising lazily across the sky.

What you don’t see in a quadcopter every day is something that can actually challenge your flying skills. Whether you are new to multirotors, or maybe even a helicopter pilot, Helimax might have just the thing to take your flying to the next level.

The Voltage 500 is a 3-D quadcopter. Like the few that paved the way before it, the Voltage features reversible motors with symmetrical propellers so you can fly inverted. Unlike the others, the Voltage offers extreme flexibility for flight batteries, an efficient motor/propeller combination for extended flight times, and a unique canopy design that makes orientation a breeze. Did I also mention that as well as having a 3D Mode, its Stability Mode can be used for bailing out of maneuvers?


In the Box

The Voltage comes in a large box, hinting at the aircraft’s size. Inside of the box is the fully assembled Voltage 500, an instruction manual, a piece of Velcro (presumably for the flight battery or receiver), and a spare set of propellers. I did not expect there to be an entire set of spare propellers in the box, so I was pleasantly surprised.
I also received two 4S FlightPower LiPo batteries for this review—a 2,500 mAh pack and a 3,300 mAh pack. Your own receiver and a flight battery are needed for completion. I chose to use my Futaba 14SG, with an S.Bus-compatible receiver (more on that later).




Having the battery strapped beneath the quadcopter allows for a range of possible battery sizes.


The Voltage 500

As you might have guessed from its name, the Voltage 500 is a 500-class quadcopter. If you are wondering what 500 stands for, the multirotor measures 500mm from one motor to the other diagonally across. This 3-D quad is larger than others on the market.

The flight controller features a USB port (more on that later), and a receiver output that supports S.Bus, XBus, DSM2, DSMX, DSMJ, and PWM (with an optional S.Bus Encoder). A second plug is used to power your receiver from the flight controller’s built-in BEC. Each ESC has a plug that goes directly into the flight controller, and the motor wires run through the carbon-fiber boom and plug into each ESC. The ESCs have a series of status LEDs on the bottom, which are visible from underneath the airframe.

These propellers are big—measuring 8.9 inches from tip to tip. They appear to be unique to the Helimax Voltage because I couldn’t find a match to any other propeller. They come in pairs, an A and a B, both of which are clearly marked with a molded letter on the top of each. If you are unsure of which propeller goes where, the instruction manual has a handy diagram that illustrates the direction.


The Flight Controller

The flight controller supports many outputs. I had a spare Futaba R6202SBW, which is an S.Bus-compatible receiver, so I was able to run a single cable from the flight controller to my receiver.

For those using satellite receivers on DSM2, DSMX, or DSMJ, there are two satellite ports into which you can plug satellite receivers. There is also a reset button in the middle of the flight controller, just in case it gets confused and locks up (which mine hasn’t done to date).




The double-stacked frames allow plenty of room for receiver installation.




The heart of the Voltage 500 is the flight controller. This is where you attach a USB cable for tuning with a PC.


The App

What is the purpose of that USB port on the flight controller? If you go to the Helimax website, you can download the Voltage 3D app by clicking on the software download tab.The app lets you set your receiver type (a necessity if you are using anything other than S.Bus), and it allows you to verify control functions and directions. It will show you what flight mode you are in, permit you to adjust gain settings, and damper gain on the aileron/elevator and rudder gain.

There is a warning about the importance of removing the propellers before you try to adjust any settings. This should be a normal practice anytime you work on a quadcopter when the battery is plugged in.


Flying

The controls for the Voltage are much like those on a helicopter. If you divide your throttle stick into two sides, with mid-stick to high-stick being positive and mid-stick to low-stick being negative, you would essentially have a 3-D heli setup.

I started with good intentions. I planned to do the whole first flight in Stability Mode, and wait until the second flight before I tried any 3-D maneuvers. Well, that went right out of the window after roughly 20 seconds of hovering. The Voltage is a stable and forgiving machine in Stability Mode, and I believe a novice pilot would have no problem hovering it, but the Voltage was built for 3-D flying. I found myself flipping the switch into 3D Mode almost right away.

In 3D Mode, the Voltage becomes a power monster. By that I mean it has monster power! The first full-throttle punch-out that I did surprised the heck out of me because the Voltage shot sky-high at a ridiculous rate of speed. After I got it back down, I tried some flips with it and found it to be responsive, but not overly twitchy. Forward and backward flips, as well as sideways flips, were performed equally well and had a linear feeling in flight.

The transition time when reversing the motors was short, and it felt like an old-school collective-pitch helicopter that required the pilot to manage pitch during maneuvers. It didn’t take long to get used to the transition though, and I was able to hold flips without losing any altitude.

I wondered how well the bailout feature worked, so I took the Voltage up and popped it into an inverted hover. I flipped my switch into Stability Mode and sure enough, the Voltage flipped itself to a level position. Combining this flight mode with a momentary switch is a great way to practice new maneuvers.

The durability of the Voltage is good, but after a few tumbles and crashes, it became evident that the carbon-fiber tubes typically break and the motor mounts have a tendency to bend when they contact the ground. You can bend the motor mounts back with a little force and quickly be up and flying again.




The Helimax Voltage 500 3D is as at home inverted as it is right side up.


Conclusion

Quadcopters are great learning tools for prospective heli pilots, as well as fun-to-fly aircraft for everyone else. The control inputs are similar to a helicopter, and the skills you learn on the quadcopter will translate to a heli. You can practice hovering orientation, inverted flying skills, even pirouetting maneuvers—all of which can be applied to helicopters.

Even if you have no interest in helis, the Helimax Voltage 500 3D quadcopter is an awesome aircraft to fly in both Stability Mode and 3D Mode. It could be the next step in flying skills for current multirotor pilots. I don’t think you could give control of it to any RC pilot without seeing a smile on his or her face!
—Chris Mulcahy
cspaced@gmail.com


Bonus Video


Manufacturer/Distributor

Helimax
(800) 637-6050
www.helimaxrc.com


Sources

FlightPower
(888) 598-8037
www.flightpowerbatteries.com




An Interview with RC Pilot Brett Wickizer

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Written by Peter Vogel
Contributed column
As seen in the May 2016 issue of
Model Aviation.


In my last column, I shared an interview with Andrew Jesky. In a continuing effort to help bring you the stories and the passion of RC Aerobatics or “Pattern” pilots, this time I bring you Brett Wickizer, a four-time member of the World Champion F3A Team USA since 2009. Brett has three gold trophies and one silver F3A Team trophy attributing to his outstanding performances!

If you’re not into Pattern (yet), you might have heard of Brett from his time in International Miniature Aerobatic Club (IMAC) competition and 3-D flying, or from CK Aeropedia, the RC company he helps run with his longtime mentor and caller, Bryan Hebert. He’s also written several excellent articles about aircraft design, Pattern flying, and more, which you can find on CK Aeropedia.

I asked Brett how he got started, what he did before he got into flying RC Aerobatics, and how he fell into it. He answered most of my prepared questions with a great story that I think reflects what I’ve heard from many young Pattern pilots!



Flying started for me when I was young enough to have it as one of my first memories. This was not the way it started for virtually everyone I compete against—Andrew Jesky, Jason Shulman, Chip Hyde, and AC Glenn. They all had it in their families.

My first memories of flying are small, die-cast toys that were powered by imagination and flown by hand. That is all I remember until I was approximately 9 years old, when my dad decided it would be a fun father-son activity to build a trainer and learn how to fly as a family.

After a three-year break and a few months on the simulator, I was tearing up the skies. Flying was all I wanted to do and I had an insatiable desire to get better at it. That desire manifested itself in several ways when I was younger. I can look back at it now and appreciate it in a way that I couldn’t while it was happening.

After a little bit of sport flying, I was hungry to push the envelope, and 3-D was the most exciting challenge I could imagine. I remember what hooked me on 3-D. I can pinpoint the exact moment.

My dad and I were driving back from the field and right as we were pulling into our neighborhood, he told me about videos he had seen of people hovering their airplanes, and then they would bring the airplane down, touch the tail on the ground, and pull back up! “What?” I thought. “No way! That’s crazy.”

These days, a perfectly executed rolling circle is more thrilling—and indeed more challenging—but I don’t know if any future experience will match the unadulterated excitement I experienced then at the thought of executing a torque roll down low. I was in love.

The love, like in most young relationships, burned hot and burned fast. I couldn’t get enough! That is, until I got enough, and I realized my desire to get better wasn’t satisfied. I could do rolling Harriers 3 feet from the ground, touch the tail, torque roll to my heart’s desire, and cut the grass with my high-alpha knife-edge attitude down the length of the runway. So what? Other people could do that too. My drive for self-improvement was yearning for an outlet.

I knew that all of the best pilots were [RC Aerobatics] competitors, so that had to be my next step. Pattern was actually my second choice because of the Freestyle competition at IMAC events, but Pattern was more popular in my area, so I pursued it.

My first contest was in Baton Rouge, Louisiana, in May 2005. The contest director was none other than my future cohort and teammate, Bryan Hebert. By the end of that season, I was the Pattern Intermediate national champion.




Brett Wickizer (L) and his mentor, caller, and business partner at CKAero.net, Bryan Hebert.





Several competitors, including (back L-R in orange Futaba shirts) Chip Hyde, Brett Wickizer, Chad Northeast, Bryan Hebert, and (bottom L in the blue jacket) F3A legend Wolfgang Matt, during the 2010 F3A Pan American Championships in Medellin, Colombia.


The next year, I was Advanced national champion, and the year after that, I jumped straight into F3A. I am proud of a sixth-place finish in the finals. In 2008, I finished third at the Nats and qualified for a spot on the 2009 USA F3A World Championship Team.

Man, what a rush! Writing about it now brings back memories. That contest was difficult. I was in sixth place going into the finals and I had to jump none other than Sean McMurtry and Chip Hyde to earn a spot on the team. That year it was me, Andrew Jesky, Jason Shulman, Quique Somenzini, Chip Hyde, Sean McMurtry, Don Szczur, and Dave Lockhart in the finals. Wow!

Let’s put this into perspective. I was a woefully inexperienced teenager up against absolute giants in the hobby. All seven people on that list are F3A national champions! Two are F3A world champions, six (including me now) have been USA team members, and four are top-three finishers at the legendary Tournament of Champions.

No need to look any further for proof that the best-of-the-best compete in Pattern. You won’t find a list of names like that at other events.

My world has opened up in so many ways since I started competing. I have traveled to five continents, met friends from dozens of countries around the world, connected with people who have helped me in the real world and in my professional career as a full-scale pilot, and I’ve experienced things that have changed my perspective on life in profound ways. Competing in F3A is more than just a hobby for me. It’s a lifelong passion.



I asked Brett what advice he has for RC pilots today, particularly those who love flying, but don’t know if they want to get into competition or are more interested in disciplines other than RC Aerobatics. He responded with:



It’s my hope that some who read this will give a second thought to competing. Not everyone will have the same opportunities that I have had. It’s only a lucky few who get to travel the world to compete, but traveling is not what makes it so special.

Competition itself strips everything unnecessary out of your life. If you remain open to the lessons that the trials and tribulations of competition can teach you, there is no better teacher. There is no better way to get to know yourself, no better way to test yourself, and no better way to push yourself.

On top of that, every facet of competition in RC aviation has an incredible community behind it that is engaging, friendly, and helpful in so many ways. You owe it to yourself to give it a shot.


Additional photos

Model Aviation Magazine - Interview with Brett Wickizer


Sources

National Society of Radio Controlled
Aerobatics (NSRCA)
www.nsrca.us

CK Aeropedia
(225) 369-3542
www.ckaero.net




de Havilland DH-112 Venom

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Written by Mark Freeland
An easy-to-build all-sheet semiscale hand- or catapult-launch glider
Free plans and build photos
As seen in the May 2016 issue of
Model Aviation.


Download Free Plans

Click here for page one of the Venom plans
Click here for page two of the Venom plans (stabilizer only)


Supplies needed

• Two 1/16 x 4 x 10-inch balsa sheets
• One 1/16 x 3 x 10-inch balsa sheet
• One 1/16 x 1-1/2 x 6-inch balsa sheet
• A sharp hobby knife
• Sandpaper
• Two #8 washers
• Glue


Follow these steps to build your own Venom.

To make a catapult launch, you also need a 6-inch dowel handle with a loop of 3/32 x 18-inch rubber strip for the launcher.

Photocopy the plans and attach them to wood sheets with a glue stick, tape, or low-tack adhesive. Use medium 1/16-inch balsa sheet for an indoor glider. To make a stronger outdoor glider, substitute 3/32-inch balsa sheet, and widen the slots to match. I recommend using a slow-drying glue for assembly.

Cut out the parts with a sharp knife. Get help with this if you’re uncomfortable using sharp tools.

The angle of the slot in the tailbooms and rear top surface is important. Both tailbooms should be identical. Remove the paper patterns from the wood and sand all of the parts before assembly because this is easier than doing it afterward.

Glue the wing halves together with one wingtip raised 31/2 inches from the building board. Reinforce this joint with a glue fillet. Glue the fin to the end of the tailboom and leave a 1/16-inch gap for the stabilizer to slide into the fin.

When the glue is dry, slide the stabilizer into the slots on both tailbooms and glue it in place. The tailbooms should be parallel and perpendicular to the leading edge of the stabilizer. Leave the tailboom bottom edges on a flat surface while the glue dries.









Slide the two-piece wing into the slot in the fuselage’s main body. Align it so that it is centered and has equal dihedral (upswept angle) on both sides, then glue it in place. When it is dry, slip both tailbooms onto the rear of the wing, slide them into the slots on the wing, and glue them in place. Glue the side cheek doublers on each side of the fuselage.

Next, glue the wing root fillets between the rear of the wing and the fuselage. Make sure to align them with the wing’s surface. Add the optional wingtip tanks if desired.









For a catapult glider, cut out a hook as shown by the dashed line on the plans, or bend a wire hook as shown. Drill a 1/32-inch hole up into the fuselage, and epoxy the hook into the hole. Cut two 1 x 5/8-inch sandpaper grips, trim them to shape as shown on the plans, and glue them on each side of the fuselage under the wing root fairings.





Decorate the glider as you want. You can use markers, paint, etc. Look on the Internet for color schemes from which to choose. There are many! Cut out the cockpit and other decal patterns from the plans and glue them on (if you like).

Add weight to the nose (I used washers and clay) to balance the glider at the front tips of the tailbooms. Test glide and adjust the balance to achieve the best glide. Turns can be adjusted by adding a pea-size piece of clay under one wingtip. Trim the aircraft for a left-hand turn if you are launching with your right hand.

If you use a catapult, launch the de Havilland with a 45° bank angle at 45° to 60° from the horizon. With practice, you can achieve glide times of 20 seconds or more. Don’t forget to add your name and address to the model in case it gets away.

If you prefer not to cut out your own parts, a laser-cut kit is available from Retro RC LLC & Campbell’s Custom Kits.
—Mark Freeland
retrorc@live.com


Sources

Retro RC LLC & Campbell’s Custom Kits
(248) 212-9666
www.retrorc.us.com




2016 Weak Signals Toledo R/C Expo

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Digital event coverage of the 62nd annual Weak Signals Toledo R/C Show.
Videos and photos by Model Aviation staff.
Jay Smith showcases videos featuring new products and vendor offerings.


Check out this exclusive video playlist and enjoy all the sights of The Weak Signals Toledo R/C Expo!




Fostering an Active Flying Club in the Modern Era

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Written by Dave Scott
A cause-and-effect approach to understanding thriving and declining club trends
Photos by the author, Jay Smith, and Jenni Alderman
As seen in the May 2016 issue of
Model Aviation.


Starting approximately 15 years ago, many model airplane clubs began seeing a decline in membership—fewer new people were joining and interested visitors to the flying field often did not return. This trend continues today. Whenever this subject is brought up, the usual justifications related to the economy and peoples’ changing interests are given as to why this is a sign of the times, as if nothing can be done about it.

I visit many clubs throughout the Midwest and elsewhere on behalf of my flight school, and despite the standard reasons people give to justify their club’s decline, I know of several clubs that are currently thriving, and more importantly, that have a large percentage of members who actively fly.

Whether large or small, near cities or in rural settings, the successful clubs that I visit all display similar, easily copied characteristics that the struggling clubs I visit do not. I want to highlight the tendencies that are on display at clubs that do well at acquiring and retaining members, and conversely, why others are in a state of decline. By doing so, I hope to present several easily adopted solutions to help stem the decline and promote club growth.

Those who feel that the membership has no role in their club’s decline will probably take offense to some club behaviors that I will shine a light on, whereas I’m certain that those who are members of thriving clubs will think this article merely states the obvious.

Before deciding that what works for other clubs won’t matter because your club members are older and you can’t get new members, for the sake of discussion, let’s say that your club sponsors a model display at a mall or a hardware store. As a result, five enthusiastic new people show up at your flying field the following weekend, expressing interest in joining the club and flying.

Is your club prepared to accommodate them and retain them as members? Or is your club stuck in a pattern of telling newcomers that they’ll first have to learn how to set up an airplane then, depending of the availability of the instructor(s), they will have to expect some crashes and make a number of trips to the flying field before they’ll be able to fly on their own?

To veteran club members, that sounds perfectly normal; however, as many clubs are finding out, this no longer works in our instant-gratification society, where so many other activities vie for peoples’ discretionary time and promise to deliver immediate fun.





1. The first significant trait on display at successful clubs in the modern era is that their leadership constantly promotes flying! For example, when a potential new member visits the flying field, the club leaders do everything they can to get that person in the air as soon as possible, or at least ask him or her to accompany them while they fly.

An interest in airplanes and flying is primarily what draws people to the hobby, and it is what RC aviation offers that they can’t get anywhere else—especially since the training requirements and cost of full-scale aviation have become prohibitive for many people.

A typical busy person today enters aeromodeling to have fun, as well as to enjoy the freedom that flying represents as an escape from stress and real life. The reasons for joining a club are mainly to have access to a well-kept, dedicated flying site and access to the help of experienced modelers.

The camaraderie and everything else that goes with being a club member is secondary to flying in the beginning. To the consternation of many veteran modelers, a typical RC pilot today looks at the process of setting up an airplane as mainly a means to fly, and would prefer not to spend much time working on his or her airplanes.

Recognizing this, effective club leaders focus on “accentuating the positives” whenever they encounter a potential member or interested spectator. These positives include a dedicated runway from which to fly, experienced members to help answer questions, and the fact that technology is making it easier and cheaper than ever before for people to enjoy the hobby.

Good club leaders are like good car salesmen who smartly pitch a car’s best features in order to elevate a person’s enthusiasm before getting into the details of price, fees, etc. Failing clubs, on the other hand, tend to jump right into bringing up dues, prohibitive rules, duties, costs, etc., whenever an interested visitor/potential member shows up at the field. They then wonder why the person never returns.






2. If the reason for the club’s existence—a dedicated environment in which to fly model airplanes—is no longer the main focal point, the primary reason to join or remain part of the club no longer exists. In these cases, the non-flying members of the club will invariably steer the club’s focus and resources to activities unrelated to flying—such as club politics—causing people who were originally drawn to the hobby for the fun of flying to have little reason to come back. There will always be conflicting interests and politics in any organization, but they are less noticeable when there’s plenty of flying taking place.

For a variety of reasons, such as seldom having a plan before flying and deemphasizing fundamentals in favor of the latest technology and design, the flying skills of an average club flier typically plateau within three to five years. As a result, those who don’t become discouraged or lose interest, often turn to constantly tinkering and acquiring new equipment to get their kicks.

That would be fine, but when constant tinkering is presented to an average newcomer as standard operating procedure, what he or she mainly sees is an endless series of obstacles that get in the way of flying and fun.

As these perceived obstacles chip away at a newcomer’s enthusiasm, or as the result of a negative experience (such as a club member disassembling his or her airplane rather than helping get it in the air), reasonable people will start thinking about other activities that don’t involve as many hurdles.

The conundrum that many clubs face today is that although some of the veteran members act as though it would take the fun out of the hobby if everything worked and nothing needed to be changed, that would be an answer to prayers for newcomers and those trying to improve their flying skills.

Of course, if a newcomer is inclined toward tinkering, there is no better outlet than RC aviation. However, all too often veteran fliers forget how intimidating it is to be a newcomer and how much more there is to learn than anyone expects. The temptation to impress your novice audience by sharing the setup expertise you developed throughout many years can prove daunting to someone who entered the sport hoping to start flying right away.

Effective club leaders, motivated by wanting each member to have a positive experience and thereby raise the likelihood of him or her remaining active in the club, make every reasonable effort to keep things simple and remove obstacles that would get in the way of others enjoying flying at the club field.

Anytime a member brings a new airplane to the flying field, the club members should refrain from pointing out all of the things that they don’t like or would do differently. Instead they should perform the essential checks to ensure that an airplane is airworthy (such as checking the center of gravity, correct travel, batteries), and then do their best to get it into the air as soon as possible.

Don’t misunderstand me. If you’re familiar with 1st U.S. R/C Flight School or my training and setup manuals and articles, you know that I’m a big proponent of doing everything possible to improve performance, and therefore the speed of learning. Even so, the reality is that many of the improvements that I make to airplanes used in my school would barely be detectable by an average club flier.

My point is, whether it’s a recreational club environment or commercial RC flight school, the main thing is to get the basics correct and know that refinements only help to fine-tune airplanes that are fundamentally sound to start with.
Effective leaders know that it is wise to not bring up all of the minute ways to “make things better” until a person first has a good handle on the fundamentals. What good is a slightly more-capable radio or gadget going to be if the club member hasn’t yet mastered the basic setup and operation of the equipment that he or she already has?





3. Another factor contributing to declining club membership is the tendency for people to whom everyone looks for advice to recommend the latest, greatest equipment and setups that match their own interests and ways of doing things.
They should recommend what best aligns with the skills and interests of members asking for advice. It won’t matter how valid your advice is if it’s beyond the abilities of most of the members and causes them to become discouraged or give up on flying before realizing any benefit from your advice. Effective leaders try to make practical recommendations that will offer the greatest likelihood of success.

Consider the E-flite Apprentice basic trainer. Veteran modelers typically advise any newcomer buying an Apprentice to forgo the basic radio offered with the airplane, and instead buy one with more features. However, the radio offered with the Apprentice is preset by the factory, so all that a novice has to do is charge the batteries and fly. Those who “upgrade” to a more-capable radio have to overcome the challenge of learning confusing terminology and how to program the new radio rather than experiencing the immediate gratification of flying.

Learning to program radios has become one of the greatest challenges in the hobby, and it is often counterproductive to thrust that daunting task on any newcomer whose motivation for getting into aeromodeling was to have fun, but already has so much else to learn. Of course, at some point a fledgling pilot will have to learn to set up a model and radio, and might possibly even enjoy it, but setting the precedent of facing a complicated process of programming before flying is intimidating, and often erodes someone’s enthusiasm before even getting to fly.

Despite many clubs struggling to get and keep new members, many older members continue to frown upon airplanes such as the Apprentice that utilize modern, three-axis stabilization technology aimed at making learning to fly easier and less likely to involve significant repairs.

Because some of these airplanes require unconventional control techniques compared with the way a newcomer will eventually fly, veteran modelers will often frame stabilization technology as a crutch and subsequently convince the student to turn it off. What good does it do to point out that those who learn to fly with the stabilization turned on will have to learn different control techniques in the future if, before they get to that point, they become discouraged and quit?

Active clubs with a high retention rate never discourage, but rather encourage, the use of anything that helps new members get to the point of being able to safely fly on their own whenever they wish. Those systems aimed at speeding up success in the air can usually be diminished or turned off as a pilot’s confidence increases.

Because SAFE technology often enables new pilots to solo on the first day, it solves one of the biggest challenges that clubs have faced in the past 40-plus years: finding committed instructors who are available to train regularly.






4. One of the biggest contributors to clubs struggling to retain active fliers is the tendency of the leadership at the field to continually push members to purchase more advanced equipment and increasingly larger airplanes under the guise that doing so will help them fly better.

Although that might be partially true, it has contributed to the phenomena of people leaving their clubs after four or five seasons when the hobby is no longer enjoyable. These former members no longer attend the club, but they continue to fly park flyers close to home and strictly for fun.

Although the club’s more experienced members might be pitching radios with more features and claim that “bigger flies better” or espouse “what the pros use,” seldom mentioned is the additional complexity associated with those components. You can visit clubs across the country and see large numbers of people preoccupied with learning how to program their radios and operate their equipment instead of actually using it to fly!

You’ll also notice that within weeks of any member giving in and getting a substantially “bigger and better” airplane, his or her attendance tends to drop off. If you question the person about it, he or she will have a list of excuses about how it’s been too windy, he or she has been too busy, and/or it’s become more convenient to fly helis and park flyers closer to home.

The only thing that’s different from when the person used to come regularly to the club field is that his or her equipment became appreciably more expensive and complicated to operate, so the excitement about going to the flying field has been replaced with the fear of jeopardizing a substantial investment.

We can reassure a person that the fear and anxiety does subside and that he or she will eventually enjoy an elevated sense of satisfaction. Yet for the majority of fliers who got into the sport as a fun hobby, it is rare to see someone remain active in a club when flying is no longer fun.

Another important characteristic of a successful club is that the leadership never makes members feel as though they are operating inferior equipment or tries to push them to purchase equipment that is out of their comfort zone. If the members are successful with what they have, the “grass is greener” effect will eventually kick in and they’ll choose on their own to take things to the next level—or not. If it ain’t broke, don’t fix it!

The reality is that although technology can be wonderful, it has also made people’s day-to-day lives busier. Clubs that are thriving today recognize that many people simply don’t have the time to methodically learn all of the technical aspects of the hobby the way that veteran modelers have always sought to do. Heck, many people today don’t even have a dedicated place to work on their airplanes!

Rather than trying to return to the old ways, successful clubs today are open to all types of flying. They support the fact that the only/best option for many people is to fly mainly ready-to-fly setups that are easy to store and transport.

I know of several clubs that attribute a large part of their decline to ready-to-fly park flyers and helicopters, which make it easier for people to fly close to home. The existence of low-cost, easy-to-fly aircraft has made it much easier for people to get into the hobby, and more people fly RC models today than ever before. That means that the pool of potential members for clubs to draw from has never been larger.

When people reach the limits of what they can do with their simple park flyers, most will start looking at larger, more capable airplanes that can handle more wind, and therefore need to find larger flying fields. It’s the same as people saying to me that because it’s becoming easier for people to teach themselves, there will no longer be a need for an RC flight school. In reality, interest in the school has tripled in recent years, thanks in part to more people entering the hobby.

Rather than eliminating the need for clubs, park flyers often help stem the membership decline and make it easier for more fliers to get stick time. Although it might appear to veteran members that park flyers are contributing to declining club participation, it is more likely that those clubs simply don’t offer much more than what fliers have access to closer to home.





5. Although I’m a 3-D pilot, it is easy to see that another contributor to club members losing interest in flying is the tendency of 3-D pilots to encourage those around them, no matter what their abilities, to purchase 3-D airplanes and equipment. Additionally, much of what people read and see online is also aimed at enticing pilots to pursue 3-D.

The unspoken reality is that learning to fly 3-D requires such fast reflexes and endless hours of practice that many fliers will never achieve 3-D flying skills. Plus, no one mentions that the tradeoff for setting up a model for 3-D is that it generally becomes more difficult to fly.

Consequently, with so many pilots basing their equipment and setup choices on flying 3-D at some point, many end up struggling or hitting a plateau, especially when the complicated process of learning to program and trim for 3-D turns out to be much easier said than done.

When these realities mount, those who don’t become discouraged and quit often fly less and less, preferring instead to spend their time making changes to their equipment and getting involved in nonflying club activities.

The following summarizes some of the most productive tendencies on display at many of the country’s vibrant clubs. Just remember, assuming that there is a willingness to take steps to increase flying activity at your club, not to let the perfect be the enemy of the good! That is, you can’t do everything that has proven to work for other clubs, but giving a few of these strategies a try is certainly better than doing nothing at all.

• Successful clubs promote a policy of never allowing spectators to sit off to the side by themselves, but rather encourage their members to introduce themselves. If the spectators express an interest, invite them to check out the airplanes and to sit with the members.

It’s counterproductive to send a new visitor/potential member home with instructions to search for the information that they’ll need to get started in the hobby. Novices don’t even know what questions to ask, so have all of the printed forms needed to join AMA and the club (even if they’ll be joining online), and, if possible, a printout of an RTF basic trainer, ready to hand to any interested spectator before he or she leaves.

• When talking with a potential member, club members refrain from airing dirty laundry and tales of failure. Instead, they should accentuate the positives of how technology is making it easier to fly than ever before, and that by joining the club, he or she will have access to a dedicated flying site and experienced pilots who can offer advice when needed.

• As long as a person’s equipment is airworthy, leaders of clubs with high retention rates generally hold off pointing out everything they would change or improve upon, but do their best to help that person experience the thrill of seeing his or her airplane in the air as soon as possible.

• Unless it’s appropriate, leaders of active clubs avoid framing members’ equipment as inferior and trying to persuade them to purchase increasingly more complex/expensive equipment under the guise that it will make them better fliers. Instead, club leaders emphasize that the main things are to have fun within their individual comfort zones. Although good equipment is important, correct practice is much more important. (Remember, what someone might refer to as an inferior radio today would have been state of the art only a decade ago, and entirely capable of fulfilling the needs of 95% of fliers!)

• Rather than promoting 3-D flying and complex 3-D equipment setups as the end-all after learning to fly, leaders of successful clubs try to offer practical recommendations based on what they feel gives each member the greatest likelihood of success, based on his or her immediate skills and interests. Effective leaders correct the impression that the route to becoming a better pilot is to try to mold yourself after the club’s best 3-D flier, but instead hype the fact that the awesome (unique) thing about the hobby is that there are so many options available, and that pilots can change their interests at any time.





My efforts to highlight these tendencies and help stem the 15-year trend of declining club membership might prove to be wishful thinking. However, I make my living in the hobby, and I fly large aerobatic airplanes that require well-maintained runways. Therefore I have more than a casual interest in clubs doing well. That noted, I want to bring up a couple of final observations.

Although I’m sure there are exceptions, I know that if a club does not appoint leaders who actively fly and have a personal stake in maintaining a pilot-friendly club, club politics almost always take over until eventually so many people have been turned off that there are barely enough members to sustain the club.

For a club to experience growth, it must have individuals in positions of leadership who possess the initiative and/or natural inclination (often as a result of career backgrounds) to map out a club’s mission statement, along with a step-by-step plan of action aimed at cultivating an active, fun, flying club.

When people in the area hear about the club and decide to check it out, they will encounter an appealing club that looks as though it would be fun to be involved with. The reason that it takes this type of leader is because the turnaround or growth doesn’t often happen right away.

Throughout the process, some members will likely try to sabotage the leadership’s efforts because, from the sidelines, they think they know better. That’s when having a plan in place helps keep things moving toward the club’s stated objectives, rather than allowing the diversions common to any group undertaking to sap everyone’s enthusiasm.

There are many other things that successful clubs are doing, including building attractive websites, community involvement, etc., but it all starts with getting the basics right to foster an environment that promotes flying and encourages people to have fun and pursue their own particular interests.

Have a great 2016 flying season!
—Dave Scott
1usrcfs@gmail.com


About the Author

Dave Scott is a champion full-scale aerobatics competitor and an air show pilot, as well as the founder of and chief flight instructor at 1st U.S. R/C Flight School. His groundbreaking books and articles feature the accelerated training techniques and methodologies he developed while professionally instructing more than 1,700 RC pilots of all skill levels. More information about his books and school can be found at www.rcflightschool.com.






Sources

E-flite
(800) 338-4639
www.e-flite.com




In the May issue of Model Aviation Dave Scott, founder of 1st U.S. R/C Flight School, talks about fostering an active club environment. Which of these suggestions do you think are things your club could improve upon?

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Warbird Pylon Racing

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Written by Don Stegall
Get into the excitement of racing at this year’s Nats
Photos by the author
As seen in the May 2016 issue of
Model Aviation.


The upcoming 2016 AMA RC Pylon Racing Nats, to be held July 15-22 in Muncie, Indiana, will include a warbird racing event. I’m going to share details that might benefit people and clubs that want to get involved in warbird racing.

Radio Control Pylon Racing Organization (RCPRO) Warbird Racing and some of the warbird racing groups in California are based on similar concepts. Similar to AMA Pylon Racing events, there are tiers of performance, but the airframe and engine rules for these classes are more open than AMA Pylon Racing.

California-style racing uses a wing-area-to-engine-displacement chart. RCPRO racing no longer has a wing-area chart. In RCPRO racing, the only wing specification is that the wing area must be 400 square inches or more. The wing-area chart was dropped because wing area to displacement can favor some engine and airframe combinations.

With the advent of electric power using brushless motors and LiPo batteries, it becomes difficult to specify the power system. But these wing-area charts set some limits concerning speeds that can be achieved. There are pluses and minuses to each, and this can be a real “conversation starter.” At the 2016 Warbird Racing Nats, a wing-area chart is specified and electrics will not be competing.

The question is, “How do you have tiers of performance when so many powerplant and airframe possibilities exist?” The answer is brackets. Bracket racing is not a new concept. It has been done in automobile drag racing and in closed-circuit car racing. In Pylon Racing, a standard course has been defined and brackets have been established for that course size.

The current and most popular course is a two-pole, 700-foot course. Three classes of aircraft performance have been established. Bronze is the slowest of the classes with a breakout time of 2 minutes and 30 seconds. Silver class has a time of 2 minutes, and the breakout time for the Gold class is 1 minute and 30 seconds.

A breakout time is the minimum time you can post in a heat and not be penalized for going too fast. This is somewhat foreign to people who are accustomed to many types of racing, where the first person to finish the race or heat wins.

The purpose is to limit how fast the airplanes can go in their tiers. To get a 1-minute-and-30-second time in the Gold class, you don’t need a model capable of 200 mph; a 150- to 175-mph airplane can win a Gold heat race.




The RCPRO Warbird Course will be used for the Warbird Pylon Racing event at the 2016 Nats. It is designed for safety and is used for waivers for sanctioned warbird events in RCPRO and RCPRO-derived class races. The breakout times are established for this course.




Pilots and callers are getting their strategy together for a heat race. In bracket racing, there is an element of strategy to race as fast as possible without beating the breakout time.




The pilots fly from off the course facing the pylons. This is a heat in a Silver-class race.


As in nearly all forms of racing, preparation and consistency are key to winning. Many of the airplanes flown in warbird racing use retractable landing gear. Having landing gear fail or perform poorly on takeoff will get you no points if you don’t get the airplane off the ground. Having a gear failure on landing can damage your aircraft to the extent that you might not be ready for the next heat.

Retractable landing gear makes an aircraft significantly more complex. In fact, in full-scale general aviation, an airplane with retracts and a variable-pitch propeller is described as “complex.”

Because the type of racing I am discussing has no limits on engine or fuel system modification, the key is having both be reliable.

Some of the models use YS or other brands of engines with pressurized fuel systems. Proper preparation of a pressurized fuel system adds to the performance and complexity involved in running those engines. Contestants provide their own fuel. Some run 50%, 60%, or 70% nitro. With the high nitro content, engines can and do fail.




This is the YS115FZ-WS Warbird Special engine. It is an evolved version of the YS110 and fits in the same mounting pattern.


Propellers are not limited. Matching a propeller with an engine and an airframe is an art. The Gold-class aircraft tend to be the most complex and highly tuned. With the breakout times, the fastest, most-tuned model might not win. All of the pieces have to come together.

The good news is that you can take nearly any semiscale warbird ARF and be competitive in the Bronze class. One of the most popular models for warbird racing is the P-51 Mustang 46, offered by The World Models. This airplane has a wooden wing, fuselage, and tail, with a fiberglass cowl. The World Models also offers the Voodoo Mustang 46 and the Dago Red Mustang, both with similar planforms. With good assembly skills, aircraft from other manufacturers can also be set up for the Bronze class.

The speed of a competitive Bronze-class model should be in the 100 mph to 120 mph range; however, an 80 mph model can compete in Bronze and even win.




This is a Bronze-class heat looking toward Pylon One on the right side of the course. The bucket on the top of the pylon helps the pilots see the pylon.



This photo captures a Silver-class heat as the models round Pylon One.



Choosing an airframe and engine combination for the class in which you want to compete is key. An unreliable airframe and engine combination won’t win. You can search for advice on the RCUniverse forum or the RC Warbird Racing page on Facebook. People are generally glad to share their choices and preferences.

When it comes to the higher classes, some construct purpose-built models, while many modify and reinforce ARF aircraft. It can require significant effort to make an ARF hold up to the speeds required to compete in the Gold class, but some manufacturers produce models that do hold up to Gold-class speeds.

One of the newer models in the marketplace is the Spitfire 40 by The World Models. Although it has 40 in the name, this model was built to be able to handle the YS115FZ-WS (Warbird Special) by YS Engines. YS engines are popular. The YS FZ63S works well in the Bronze class; the YS91 does well in Silver; and the YS110 and YS115 engines are popular choices in the Gold class. All of these engines are crankcase supercharged and have pressurized fuel systems that perform well on the straightaways and in the turns.

The Spitfire 40 has electric retracts, a strong wing, and solid balsa tail surfaces. The solid surfaces make it too tail-heavy for a .46 two-stroke engine without significant weight added up front. The YS115FZ-WS weighs approximately 26 ounces and the airplane will be slightly nose-heavy if assembled according to the manual. Shifting the throttle servo rearward and putting the receiver behind the servos can balance it.




The World Models Spitfire 40 was built for Warbird Pylon Racing. It features a strong firewall with enough space for the YS115FZ-WS engine. Many other engine brands will easily fit.


The Saito FA-125A AAC with a muffler weighs 22 ounces. If you want to go with a two-stroke engine, the relatively new O.S. 95AX Ringed engine with muffler weighs 20 ounces. The older O.S. 91FX Ringed engine with muffler is in the 20- to 24-ounce range, depending on the muffler.

There are no muffler limitations other than two-stroke engines need to have a muffler or a tuned pipe. Jett Aerotech has a variety of engines that can be used and offers mufflers for other engines if you need a performance boost.

Richard Verano of YS Engines and Pylon Racing fame had significant input on the Spitfire 40. I spoke with him about tips and modifications for Gold-class racing and I purchased a YS115FZ-WS to go in mine.

I plan to make videos about the Spitfire and the YS engine, as well as other warbird racing aircraft, and share some tips from Richard. Check out my videos at the link listed in the “Sources” section.

If you are racing under RCPRO Warbird Racing rules and are not limited to .95 displacements for a two-stroke engine, there is one gas engine that might be fun to try in the Spitfire 40. The Evolution 20GX 20cc (1.20 cu. in.) gas engine with a pumped carburetor might work in the Spitfire 40 if the ignition is relocated, and possibly with the use of a header and tuned pipe instead of the Pitts muffler. With the price of gasoline being low, fuel would be inexpensive—much less than 30% to 50% nitro per gallon.

Fans of electric-powered aircraft should note that they are being raced in RCPRO Warbird Racing events and winning. Tony Pacini was a pioneer in electric power and he has been at the top of the leaderboard multiple times.

With the addition of Club 40 and Warbird racing at the 2016 AMA Pylon Racing Nats, there is something for almost anyone interested in RC Pylon Racing in Muncie this summer.
—Don Stegall
don.f.stegall@gmail.com


Sources:

Nats
www.modelaircraft.org/events/nats.aspx

Nats Warbird Championship Race Rules
www.nmpra.net/Documents/2016nats
warbirdracerulesapproved160107.pdf

RCPRO Warbird Racing
www.rcprowarbirdracing.com

The World Models/Airborne Models
sales@airborne-models.com
www.airborne-models.com

YS Engines
www.ysengines.net

Jett Aerotech
(713) 680-8113
www.dubjett.com

Horizon Hobby
(800) 338-4639
www.horizonhobby.com

Author’s videos
www.youtube.com/user/donstegall/videos

National Miniature Pylon Racing Association (NMPRA)
www.nmpra.net



UAS4STEM Takes Flight

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Written by Rachelle Haughn
New UAS contest for youth kicks off
Digital exclusive feature
Photos by Tara Stafford and Matt Ruddick
As seen in the June 2016 issue of
Model Aviation Digital.


UAS4STEM Regional Recap



A small group of hikers has gone missing in a remote area. Rescuers have determined the search area, but are unsure of the hikers’ exact locations or conditions.

Because of the terrain, looking for them on foot would be treacherous and take several hours. Searching via an all-terrain vehicle is possible, but there is only one available.

Darkness is coming fast, and the temperature is expected to dip into the low 30s tonight.

At this point, the person heading the rescue operation must come up with a quick plan of action. It would be helpful to be able to view the area from the sky, but the closest Cessna cannot arrive until two hours from now.

There must be a better and more efficient way to look for the missing people before darkness arrives …

A scenario similar to this is what students ages 11 to 19 were given shortly before they powered up the transmitters for their Quadzilla multirotors on a Saturday morning in April. The groups of four to eight youths were competing in AMA’s inaugural regional UAS4STEM competition. They were tasked with using the quadcopters and FPV equipment to find clues that would lead them to the missing hikers (which was actually a dummy).

The contest was held April 23-24 in Hollywood, Maryland, and hosted by the Patuxent Aeromodelers club. In the months leading up to the contest, the 17 teams were tasked with completing an online curriculum that included safety and flight training, building information, and aircraft programming; and building Quadzilla quadcopters.




Teams participating in the contest were required to build Mid-Atlantic Multirotor Quadzilla quadcopters from a frame kit.


Before preparing for the contest, the students at the first of six UAS4STEM regional competitions had never flown, built, or been exposed to any RC aircraft, including multirotors, said Bill Pritchett, AMA Education director.

“This is brand new to them and some had never used tools before,” Bill stated. “I think it’s a huge opportunity for us to tie this new technology into education for the kids.”

The teams were evaluated by some Patuxent Aeromodelers club members who served as judges. The competitors received points for an oral briefing that they had to present before their flights, meeting the requirements of the flight mission, completing autonomous flight tasks, and finding the mystery items. The autonomous flight tasks included takeoff, landing, accurately displaying the “no-fly-zone” boundaries, and waypoint navigation. The team with the most points won.




As part of the competition, the teams had to explain to a panel of judges how they planned to complete the mission.


After conducting their preflight inspections, the pilots had to fly above the assigned search area and find items that could help them locate the missing hikers, such as a cooler, a lawn chair, and a tent. Most of the teams used some sort of search pattern to find these objects. The locations of the items were called waypoints. When these things were found, the team members used GPS and computer software to mark the waypoints. The aircraft had to hover at each waypoint for a minimum of 5 seconds.

Jessy Symmes, AMA Education assistant, said she asked some of the teams what they based their search patterns on. She said one of the Civil Air Patrol (CAP) teams used a pattern similar to one used by the Navy, another implemented one commonly utilized by aerial firefighters, and a third used trigonometry. “They would fly over [the area] until they found the first item, then they used trigonometry to find the next. They found all of the items,” Jessy added. Other teams didn’t have a search pattern to follow. “Some just did hunt-and-peck,” she said.




One of the terrain problems that a search-and-rescue team on foot would have encountered is this tall brush. In the case of an aerial search operation, however, it cushioned the landing of this Quadzilla that was recovered by one of the UAS4STEM teams.


The Maryland regional contest was held from 8 a.m. to 3 p.m. each day. Most of the competitors lived two hours or fewer away. Some of the teams’ entry fees were funded by the Naval Air Station Patuxent River, which is located near the Patuxent Aeromodelers club’s flying site where the contest was held. Bill said these teams were from high schools near the naval base, and 1/3 of the participants were females.

Jessy said that the teams participating in the upcoming regional contests included some made up of five kids who live in the same neighborhood, a group of boys trying to earn their Eagle Scout badges, a group of homeschooled brothers and sisters, and some students who met in a class and decided to form a team.

The other five regionals were scheduled to be held April 30 to May 1 in White Lake, Michigan; May 7-8 in San Diego; May 21-22 in Ball Ground, Georgia; June 3-4 in Fargo, North Dakota; and July 23 in Wenatchee, Washington.

A total of 75 teams registered to compete in the regionals. Jessy said that AMA had hoped to have 15 to 20 teams participate in the first year of the contest. “Never in our wildest dreams [did we think] we would have 75 teams,” she said. Jessy added that the number of teams had to be capped at 75 because AMA employees ran out of time to get the quadcopter kits delivered to the teams fast enough to allow enough time for the students to build the aircraft.

This is the first year for UAS4STEM, but a similar contest, called STEM4UAS, was held in 2015. It was developed and operated by the Navy, with assistance from AMA member Archie Stafford, Bill explained. “It kind of fell apart. There were equipment failures and the kids were frustrated because there was not enough flying time,” he said. The teams used BNF multirotors for the 2015 regional event, which was also held in Maryland.

“We took charge and got a website and started developing the AMA version of that,” commented Bill.

This year, Archie is a contracted AMA employee and holds the dual titles of national director UAS4STEM and AMA Education sUAS specialist. The Naval Air Systems Command pilot and his fellow Patuxent Aeromodelers club members were able to help the contestants when needed. In addition to being judges, some of the Maryland club’s members served as safety inspectors. They also put on a noontime flight demonstration of model helicopters and airplanes. Bill said roughly 25 of the club members live at the naval base.




The host club for the first UAS4STEM regional contest, the Patuxent Aeromodelers, put on a flight demonstration to expose the participants to a variety of model aircraft including helicopters and airplanes. Archie Stafford, who is the national director UAS4STEM, AMA Education sUAS specialist, and a member of the Patuxent Aeromodelers club, is shown here, getting his aircraft ready to fly.


The Maryland club isn’t the only one that has stepped up to the plate for UAS4STEM. Jessy and Bill had plenty of praise for all of the clubs that were planning to host regionals.

“This wouldn’t be possible without the AMA clubs that have stepped up and gone above and beyond” what was asked of them, Jessy said. “It’s a lot to ask for. They’re putting this whole show on themselves.”

Other clubs that volunteered to host the regional contests have invited local media to the events, have asked colleges to come and speak to the students about their aeronautical programs, plan to cook meals for the youth, and have made grab bags for them to take home, Jessy stated.

When asked how he felt about how the first regional UAS4STEM contest went, Bill said, “Oh, two thumbs up!”

Jessy felt the same. “It went way better than expected.”

Bill added that the students seemed to enjoy the contest. “When we were giving out the certificates, I asked them if they learned anything. [They answered] yes. [I asked] did you have fun? ‘Yes.’ Will you come back next year? ‘Absolutely!’”

The top two teams in each regional will be invited to compete in the national contest. The teams from the Maryland regional that have been invited to the national contest are TORCH and St. Marys Composite Squadron (CAP) MD089. The national competition will be held August 21 at the International Aeromodeling Center, located at AMA Headquarters in Muncie, Indiana. In addition to these 12 teams, of the six teams that took third place in the regionals, the one with the fastest time will also be invited to participate in the national contest.




The TORCH team was one of the top finishers in the regional UAS4STEM contest that was held in Maryland.




This Civil Air Patrol team, MD-089, finished in the top two in the regional UAS4STEM contest. The team has been invited to participate in the national competition in August. Pictured in the back row is Jessy Symmes, AMA Education assistant.


At the national UAS4STEM contest, the winning team will receive scholarship money. Also, one of the competitors will be selected as the first-ever recipient of the Dewey O. Broberg Jr. Memorial Scholarship. The recipient will be chosen by the contest judges based on his or her demonstration of teamwork.

Although the team registration period has ended for the 2016 contest, teams can register for the 2017 contest beginning June 1 at www.uas4stem.org.
—Rachelle Haughn
rachelleh@modelaircraft.org




E-Fest 2016

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Written by Jennifer Alderman
Ten years of midwinter indoor fun-flying
Event coverage
Photos by the author
As seen in the June 2016 issue of
Model Aviation.


Sponsors

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E-Fest pilots are innovative and creative when it comes to transporting and displaying the many models they bring to the event.

Each year when I visit E-Fest, hosted by Hobbico, two words come to mind: controlled chaos. The event celebrated its 10-year milestone on February 6-7, 2016, and that chaos must be something hobbyists look forward to in the middle of long Midwest winters, because 286 registered pilots and more than 3,600 spectators came through the doors of the University of Illinois Track and Field Armory in Champaign, Illinois, to see what the chaos was all about.

At any time during the two-day, electric-only event, there are more than a dozen indoor aircraft in the air—foamies, flying wings, scratch-built micro park flyers, micro helicopters, and drones. It’s hard to keep track of who is flying what! Everyone is having fun. You only need to stand along the flightline to see smiles on the faces of the pilots and hear laughter in the air.

It is hard to describe E-Fest beyond controlled chaos—you have to experience the atmosphere yourself before you can really understand. E-Fest is typically the first big event of the year and the flying season. It’s still cold and harsh outside, so it’s a respite from the midwinter blues when everyone is wishing for warmer weather so they can fly outdoors.

To see the tables lined with transmitters and chargers, PVC-pipe aircraft holders, cardboard boxes stacked full of Combat foamie wings, and even retail boxes lined with the original Styrofoam and doubling as carrying cases—you know that modelers anticipate the next year’s event the minute that the current one ends.

Frank Noll is the E-Fest event director and he, along with many volunteers, designed this gathering as a chance for people to get together with like-minded individuals, socialize, fly, and shake off the winter blues. “We’ve tried to stick to this philosophy over the years and to keep it enjoyable without making too many drastic changes,” Frank said.
Trends dictate some of the changes, and the staff occasionally tries out a new event to see what type of a response it receives, but the organizers stick to the popular standards, including Combat, balloon busts, and the Children’s Make-It-Take-It Airplane Launch.




The University of Illinois Track and Field Armory flightline as seen from the east end of the building. Tables for pilots lined the entire outer edge of the flightline, while vendors set up behind them along the building’s perimeter.



A few pilots, such as Rusty Dose and his son, Tom, tried FPV using micro aircraft such as gliders and multirotors.

F3P RC Indoor Aerobatic and 3-D-style foamie profile aircraft were popular with younger pilots and could be seen hovering in the air at the west end of the Armory throughout the event.


Registered pilots fill the floor when it’s time for Combat. Many bring several foamies or flying wings simply for this occasion, knowing that a complete airframe—or one capable of flying—might not come home. It’s essentially a demolition derby in the air. The objective is to be the “last man flying,” battling opponents’ aircraft until they fall from the sky.

Styrofoam pieces rain down, and spectators sometimes hear the loud “whap!” of two aircraft colliding. The armory floor is often littered with debris after this event, but the cheers (or boos) and laughter in anticipation of a hit tell the entire story—the pilots are having an awesome time.

One of this year’s main attractions was the Drone Flight School—an area where you could fly RealFlight Drone Flight Simulators and try your hand at the Altitude Control Station. After basic flight skills were achieved and a “flight permit” was earned, you could step into the Hobbico Drone Cage with an experienced pilot to assist you in flying a multirotor.




Josh Schiff, from Hobbico, helps a young pilot maneuver a drone in the Drone Cage. The Drone Flight School gave registered pilots and spectators a chance to fly the RealFlight Drone Flight Simulator, get the feel for the transmitter stick at the Attitude Control Station, and earn a flight permit before hands-on drone flying with an expert in the cage.


Several seminars and workshops highlighted information that included FAA Drone Regulations, Aerial Photography Tips and Tricks, Speed Controls for Quads, Build and Fly Your Drone Racer, and Unmanned Aircraft Systems, Operator Training. The seminars were informative and featured exceptional and knowledgeable speakers.

Bobby Watts, a well-known RC helicopter pilot and commercial drone pilot who specializes in aerial cinematography and videography, flew in from Florida for the event and spoke about using his expertise in the commercial film industry.

Another guest speaker on the seminar schedule was full-scale air show pilot and modeler, Matt Chapman. Matt took time out from his busy schedule to talk to attendees about how he worked his way up from flying model aircraft as a child, to his full-time career as a commercial pilot, to his time as an full-scale competition aerobatics pilot.

Matt currently flies in air shows across the country as an individual act and with the 4CE four-airplane formation team. His love of all things aviation was evident not only in his speech, but by watching him on the flightline when he flew alongside other pilots.

The Make-It-Take-It Airplane Launch is a thrill for children who attend E-Fest. Saturday afternoon, the make-and-take area is packed with children who design, color, and put together foam gliders of their own. At 5 p.m., the main flightline is closed to pilots, and children are invited out onto the armory floor for a mass launch—and en masse they come!



The Make-It-Take-It building area was busy Saturday afternoon with children building and decorating their own model gliders for free. The youngsters were invited to take part in a mass launch of their airplanes later in the day.

Matt Chapman enjoys a moment of flying RC at the main flightline. Matt, a commercial pilot and full-scale air show pilot sponsored by Embry-Riddle Aeronautical University, was a highlighted guest speaker.


From east to west, children filled the floor. On Frank’s count, dozens of foam gliders launched into the air! The kids had a ball, repeatedly throwing their airplanes as far as they could. Will we see any of these budding aviators return to E-Fest in another 10 years as pilots?

The day didn’t end with the children’s mass launch—in fact, far from it! There was plenty of competition and fun to be had until the doors closed at 8 p.m.

The Freestyle Airshow featured some of the top pilots in Indoor Precision/F3P-style flying and outdoor 3-D and RC Aerobatics, showing off their moves choreographed to music. Swooping high and low with turns, loops, and knife-edge passes, these fliers wowed the spectators, bringing cheers from throughout the armory.

Following the Freestyle Airshow was the fun and crazy Gauntlet obstacle course. Open to all registered pilots, speed and precision flying skills were tested as the pilots raced against one another under and over gates and through loops lit up by LED lights. Some were not so successful and a few even “pretended” to fly while holding their airplanes, throwing them through the obstacles, and running the length of the course. I’m not sure if pretend airplane sounds were included ...

The aforementioned Combat “Last Man Standing” competition showered foam and broken parts onto the armory floor before the lights went out for the Blackout Night Fly. Registered pilots were invited to rig their aircraft with LEDs and light up the air for the final event of the night. Some used strip LEDs around their airframes, while others used bright white lights on the wingtips that dazzled as the models swirled in the air. It’s a special, somewhat magical, part of E-Fest to see.




The Gauntlet is a fun and crazy obstacle course that gets laughs and cheers from pilots and spectators! Registered pilots tested their skills by racing their airplanes against each other up, over, and through obstacles in several heats.




Pilots always look forward to seeing broken parts and foam raining down on the floor during the Last One Standing Combat event. Knocking other aircraft out of the air and midair collisions are a part of the fun.


Although doors opened early on Sunday and there was open flying until early afternoon, many used this day to pack their aircraft, reflect on the day before, say their goodbyes, and leave for home. There were diehard pilots who stayed and flew until the end. I’m sure they wished that it wouldn’t end, and that it wasn’t another spring, summer, fall, and winter before the next event.

With E-Fest’s 10th anniversary come and gone, I asked Frank where he saw the event being in another 10 years. He told me, “The popularity of indoor flying and the advancement of technology will dictate a lot of what happens. Everything in our hobby is cyclic, as we’re all aware, so as long as it remains popular, there’s really no need to change much. We’ll just have to wait and see where it takes us!”

If you have never visited the University of Illinois Track and Field Armory in the middle of winter for the E-Fest Indoor Electric event, hosted by Hobbico, put the 11th anniversary on your calendar. It definitely beats the winter doldrums when you have an excuse to celebrate and fly!
—Jennifer Alderman
jennifer@modelaircraft.org


Sources

E-Fest
www.hobbico-efest.com/index.html


Bonus Photos

Model Aviation Magazine - E-Fest 2016




FPV Racing

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Written by Rachelle Haughn
A new sport continues to evolve
As seen in the June 2016 issue of
Model Aviation.


Do you get an adrenaline rush when you take your model airplane out for its maiden flight? Do you ever imagine you are piloting the aircraft from the cockpit—putting on an aerial demonstration, flying in combat, or racing? At the end of your flight you receive congratulations over the radio … wait … that’s your spotter saying that you are cleared for landing.

Technological advances have made it possible for you to feel as though you are in the cockpit of an aircraft. What began with attaching a still or video camera to a model airplane to get a view from the pilot’s seat has evolved into buying multirotors with tiny preinstalled cameras.

Instead of standing around and waiting for your turn to take off from the flightline, you can sit on a comfy camp chair, wear a set of goggles, and your quadcopter can lift off from the grass. In addition to the amazing view from the sky, you can also race against others and win up to $1 million by doing it. You might have blinked or rubbed your eyes, but yes, you read that correctly.

Welcome to the ever-growing and evolving world of multirotor FPV racing. The more you compete and win, the more money is at stake—along with bragging rights, of course. This form of racing might seem foreign and new to you, but it is quickly becoming one of the most popular activities in the US and overseas.

There are several reasons for why people are deciding to take up the sport, but an obvious one is the low cost of equipment. “I’d say a fair estimate would be $300 for the goggles and the model,” stated FPV racer Matt Kloss. “[That] is pretty cheap if you compare it to anything else in the hobby.”

Matt also flies model helicopters and Two-Meter Pattern (RC Aerobatics) aircraft. He said that $300 would buy a propeller for a Pattern airplane, or three servos for a helicopter.

Chris Thomas, founder and president of Florida-based MultiGP, estimated the cost to get started in FPV Racing to be higher. He said the average cost for goggles is $200 to $500, and the cost for a multirotor is also $200 to $500. According to Chris, these estimates do not include the cost of a transmitter or a receiver.




Matt Kloss, a model helicopter pilot, recently started competing in FPV multirotor racing. He finds the sport exciting and challenging. Photo provided by Matt Kloss.




Chris Thomas, of MultiGP, addresses pilots at one of his company’s FPV multirotor races. His company designed software to make races run smoother. Photo provided by Chris Thomas.


If something goes wrong, repairing a crashed multirotor is simpler and more affordable than repairing a Pattern airplane, Matt said. “I crash [multirotors] very frequently. It’s absolutely less expensive to fix. If you crash your mulitorotor, you buy parts. If you crash an airplane, you buy a new airplane.” Lightweight, composite aircraft used for Pattern cannot be fixed, he stated.

The quadcopter that Matt races the most is a ZMR 250mm, which is sold as a carbon-fiber frame with four arms. It is a mini quadcopter to which pilots must add motors, ESCs, flight controllers, standoffs, and propellers.

Matt said there are several options when it comes to buying multirotors for FPV racing. Many companies sell kits that require a pilot to add his or her own hardware and electronics. There are also kits that come with everything needed to race, but require assembly. A few others come out of the box ready to fly, he added.

Aside from the fact that multirotors are affordable, Matt likes FPV racing because it’s fun. “It’s pretty fast and there’s a lot of maneuverability involved. It’s pretty exciting to do,” Matt commented.

Adding to the excitement is the fact that technology continues to improve, especially when it comes to the virtual-reality aspect. That’s what caught the attention of aeromodeler Scot Refsland. Scot saw a video of FPV racing online, and when he learned that the sport combined virtual reality and multirotor aircraft, “I jumped in hook, line, and sinker,” he said.

Scot took up FPV racing in August 2014, after years of flying Control Line Combat, RC, gas-powered model aircraft, and gliders. Today he also co-owns a race-organizing company called RotorSports. He enjoys flying FPV with his kids.




During an FPV multirotor race, pilots wear goggles that provide a view from the cockpit of their aircraft as they race around and through obstacles. Thomas photo.




The company that Scot co-owns, RotorSports, is developing a simulator game with “to scale” environments. This screenshot is at Kualoa Ranch in Hawaii, where the first AMA-sanctioned 2016 World Drone Racing Championships will take place. Refsland photo.


Scot is creating a timeline of the history of FPV racing for AMA’s National Model Aviation Museum, located in Muncie, Indiana. He said that the first documented FPV multirotor race was held November 3, 2012, and there is an online video of the race (see the video at the end of this story).

As more people learned about this exciting sport, races began popping up across the country. Those who were organizing the events quickly discovered that they needed some guidance for setting up the competitions. That’s when groups such as MultiGP; Scot’s group of FPV pilots, FPV Racers and Explorers; and the International Drone Racing Association (IDRA) began to form.

Fast-forward to 2016 and there are several multirotor magazines, regional, national, and world championships for FPV racing, as well as online news programs. Multirotors are sold practically everywhere. Multirotors of all shapes and sizes were some of the hottest Christmas gifts in 2015.

With the surging popularity of multirotors, AMA and other model aircraft organizations began to welcome multirotor pilots into the fold. AMA even established its own set of safety guidelines for members who choose to fly FPV. In 2015, AMA took this a step further and named MultiGP as its first FPV racing Special Interest Group.




In 2015, for the first time, an FPV multirotor race was part of the International Radio Controlled Helicopter Association Jamboree. This race was held at AMA Headquarters, in Muncie IN. Photo by Jennifer Alderman.


Chris began organizing MultiGP in April 2015, after watching his first FPV race. Although he enjoyed the race and was impressed by the speed and skill involved, he wondered if there was a way to make the competition run smoother.

He put together a team of professionals with the goal of creating helpful tools and resources for FPV pilots and those who were running the races. The team eventually developed frequency management software called RaceSync. It is now trademarked and used by FPV pilots and event organizers across the country.

“My mission is [that] we’re trying to make a sport similar to soccer,” Chris stated. “A field in every city and a coach for every field. Safety is my number-one concern.”

In addition to offering the software, MultiGP has encouraged groups of FPV racers in the US to start their own MultiGP chapters. At the time of this writing, there were 266 chapters.

Since it was formed, MultiGP has held more than 2,000 races. The group will hold the 2016 Drone Racing Championship Labor Day weekend at AMA Headquarters, in Muncie, Indiana.

According to MultiGP’s website, becoming a chapter has several benefits, including the use of the RaceSync software, racing gates that are easy to transport and set up, a timing system, signs, access to rules and other documents to help promote the race, and information about how to get races sponsored. It is free to form a MultiGP chapter, and is done simply by filling out an application on MultiGP’s website.

Scot said that MultiGP is a great source for those who want to organize a race. He added that the IDRA is the best source for large-scale or international races. His company, RotorSports, typically helps county, state, public, or nonprofit groups set up races.

The first race that RotorSports put together was the also the first “official” FPV multirotor race that AMA sanctioned. It was held April 30, 2015, at a sports stadium as part of the DATA X Conference, in Santa Cruz, California. The winner of the race was Zoe Stumbaugh and she later donated her winning Spider Hex Rat aircraft and FPV goggles to AMA’s National Model Aviation Museum.

Also in 2015, the first national FPV multirotor race was held. The 2015 Fat Shark US National Drone Racing Championships took place at the California State Fair, on July 15-17. Out of the 120 pilots who competed, Chad Nowak, aka FinalGlideAUS, took the top spot. Michael Smith, National Model Aviation Museum director, said that Scot is working to get Chad’s multirotor donated to the museum.




The first official drone race that AMA sanctioned was held in Santa Cruz CA. Zoe Stumbaugh (front, far R) won the race and later donated her quadcopter to AMA’s National Model Aviation Museum. Also pictured is Rich Hanson (back row, far L), AMA’s Government and Regulatory Affairs Representative. Refsland photo.



The inaugural US National Drone Racing Championships was held July 15-17 at the California State Fair. This year’s competition will take place in New York City. Scot Refsland photo.


This year, FPV multirotor races are expected to be bigger and the stakes will be higher. The World Drone Prix, that was held March 11-12 in Dubai United Arab Emirates, had $1 million in prize money. To qualify for this competition, teams had to compete in other races throughout the world. Several Americans were among those who raced in the World Drone Prix.

Later this year, pilots from more than 30 countries are expected to travel to Kualoa Ranch, Hawaii, to compete for $200,000 in prizes. The 2016 World Drone Racing Championships, an AMA-sanctioned race, will be held October 17-22. Kualoa Ranch has been the filming location for several popular movies, such as Jurassic Park and Godzilla.

Any FPV race that is sanctioned by AMA requires the racers to have an AMA membership. On a smaller scale, the AMA-sanctioned US National Drone Racing Championships will be held August 5-7 in New York City. Teams will be vying for a cool $50,000.

At this point, you might be seeing dollar signs and wondering how you can get started in this popular and exciting sport. You should know that whether you have flown model aircraft in the past, or if you have never touched a transmitter in your life, doesn’t seem to matter.

Multirotor FPV races are set up as a course with obstacles. The obstacles can be manmade, such as circles or gates to go through, or bridges to fly under. Some are natural obstacles including trees and rivers. The pilot flies the entire race from the view of the cockpit using goggles, and what he or she sees can be displayed on a special monitor, such as a tablet.




National Model Aviation Day 2015 featured a multirotor race at AMA Headquarters. Large monitors positioned near the bleachers allowed spectators to get a view from the cockpit. Here, Barry Flanary gets his septocopter ready to race. Behind him is one of the gates through which the multirotors were required to fly. Photo by the author.


“When you race, you’re kind of numb to the world, I guess. The time you land is kind of when the adrenaline hits because you realize if you lost or won,” Matt said of the experience. At the time of this writing, he had participated in nine FPV races.

The races are timed and broken into heats. The pilots are separated into classes based on either the battery and propeller size or the size of the multirotors that are being flown. The pilots in each class race against each other in a heat. The races in which Matt has flown have had an open class, a class for multirotors with 5-inch propellers and 3S LiPo batteries, a class for multirotors that are 250mm diagonal or more from motor to motor, and those that are less than 250mm. Matt said that there is often a winner in each class.

MultiGP breaks its races into classes based on aircraft specifications. There is a 3S class, a 4S class, and an open class. The 3S class is designed for beginners, and the aircraft use 3S LiPo batteries. The multirotors in the 4S class, which is tailored for advanced FPV racing pilots, have 4S LiPo batteries. The open class is available to all multirotors and is “designed to promote competition between all styles and configurations of aircraft to help evolve innovation in technology and design,” according to MultiGP’s website.

In addition to MultiGP, Ready Made RC coordinates FPV races. Matt said he has flown in races coordinated by both companies, and all were well organized.

MultiGP’s timing system for races is installed on the start/finish gate. Each pilot’s lap time is tracked through a small, lightweight sensor that is attached to the aircraft. This data is transmitted to a laptop computer for the judges to view. The pilot with the fastest time wins.




This is what the takeoff area looks like at a race run by MultiGP. The first obstacle that the multirotors must go through is a starting gate. This gate has sensors on it that track the multirotors’ times. Thomas photo.


The fastest times appear to be getting faster. According to Scot, his company designs its FPV racing courses to limit the aircraft’s top speeds to 60 mph. In the most recent race that Scot’s company organized, “the racers clocked 90 to 100 mph,” he said.

Scot noted that one of his goals is to get more national exposure for the sport. He would like to see FPV races broadcast on sports and news networks and find a way to better engage spectators. He believes that FPV will continue to grow and thrive.

If being a spectator is not enough and you want to play a bigger part in the hottest new sport in the US, getting started in FPV multirotor racing is probably easier than you expect. Matt suggested that those who are interested start by joining a local multirotor club and spending some time at the group’s flying site. He said clubs are good at giving new pilots advice and tips.

Scot suggested that pilots begin by holding casual weekend races. From there, they can start an online meetup group or form a MultiGP chapter.

So, what are you waiting for? It’s time to connect your batteries, put on some goggles, and get your adrenaline rush on with FPV racing!
—Rachelle Haughn
rachelleh@modelaircraft.org


First known FPV drone race


2015 US Drone Nationals Course Tour


Sources

MultiGP
www.multigp.com

Ready Made RC
www.readymaderc.com

AMA
www.modelaircraft.org

US National Drone Racing Championships
www.dronenationals.com

2016 World Drone Racing Championships
www.droneworlds.com

IDRA
www.idra.co

FPV Racers and Explorers
www.meetup.com/FPVracers/events/221472016

First documented drone race
https://vimeo.com/52734031

RotorSports
www.rotorsports.com




Flyzone Seawind EP Select Scale RX-R

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Written by Jon Barnes
Fly from land or water with the flick of a switch
Product review
Photos by the author
As seen in the June 2016 issue of
Model Aviation.


Specifications

• Model type: Amphibious
• Skill level: Intermediate
• Wingspan: 56.6 inches
• Wing area: 421 square inches
• Length: 44.3 inches
• Weight: 61 ounces
• Power system: 41-19-900 Kv brushless motor; 40-amp ESC (included)
• Radio: Minimum six-channel transmitter and receiver
• Construction: AeroCell foam
• Street price: $229.99


Test-model details

• Motor used: 41-19-900 Kv brushless outrunner (installed)
• Speed controller: 40-amp brushless with BEC (installed)
• Battery: 3S 2,200 mAh 25C LiPo
• Propeller: 11.5 x 6 plastic
• Radio system: Tactic TTX850 SLT 2.4 GHz transmitter; Tactic TR624 SLT 2.4 GHz receiver

• Ready-to-fly weight: 61 ounces
• Flight duration: 5 to 8 minutes


Pluses

• Can be flown from water or land without needing airframe reconfiguration.
• Operating speed of the mechanical tricycle gear retracts is kept slow with an electronic speed-reduction module.
• A hinged cantilever hatch creates easy access to battery compartment and cockpit.
• Bright navigation and landing lights help in reduced-visibility situations.
• Toolless wing and horizontal stabilizer attachment systems.
• Retractable water rudder enhances control when taxiing on water.


Minus

• The horizontal stabilizer did not sit squarely when mounted to the airframe and needed to be shimmed.


Product review

On average, an adult human’s body is 60% water. Roughly 71% of the earth’s surface is covered by water. A human cannot survive without water for much more than a week.

Armed with those statistics, it should come as no surprise that many pilots are unavoidably attracted to flying their models from water. Some of us typically endeavor to keep a float-equipped airplane or amphibious aircraft on our hangar’s active roster at all times.

My all-time fondest flying memory involves a late-evening session with my float-equipped Flyzone Beaver. That evening, the Beaver’s navigation and landing lights twinkled in the dusk. The red and orange western sky was mirrored on the glassy surface of the water. I kept flying, telling myself that I would shoot “just one more touch-and-go.” When I had finally exhausted all of my battery packs and called it a day, the sun had long since set and I was flying the Beaver in the dark. And loving it!

Now enter the Flyzone Seawind. Flyzone’s AeroCell foam-composition amphibious model is a flying boat (the fuselage serves as the principal float). This 56-inch wingspan model is based on the real-world amphibious airplane known as the Seawind 300C.

One of the most exciting features of the Flyzone Seawind is that it is capable of flying from both land and water in the same flight. The permanently installed set of suspension-equipped, retractable tricycle landing gear even includes a speed-reduction module. This in-line unit slows the deployment and retraction of the tricycle gear, making it operate at a scalelike speed that more accurately mimics the gear used on a full-scale Seawind.

With this model, a pilot can switch between land-based and water-based operations at will and in midflight. This feature also negates the need to reconfigure the aircraft based on whether a pilot is heading to a club field or to a local pond.

Although Flyzone had my attention with the included retractable landing gear, the model’s list of built-in features is lengthy and impressive. A retractable water rudder automatically deploys when the tricycle landing gear is retracted. Flyzone included a hinged plastic hatch lid to allow pilots easy access to the flight battery, which is a commonly used 3S 2,200 mAh LiPo battery pack.

Two sets of gray foam seats are magnetically retained and can easily be removed, if necessary. The seats, as well as twin control yokes and instrumentation graphics, are all visible through the clear cockpit windows and create nice scale realism. The two wing halves mount to the fuselage using a unique, toolless twist-and-lock system and come with both fixed and flashing navigational lights preinstalled in the downturned wingtips.

An extra foam spinner and a squeeze bottle that can be used to vacuum water that might get into the airframe are included in the box. And don’t forget the preinstalled brushless power system and full series of seven servos. As a receiver-ready (Rx-R) model, all that a pilot needs to add is a minimum six-channel radio system and a 3S 11.1-volt 25-30C 2,200 mAh LiPo flight battery.




The kit includes an extra foam spinner and a plastic squeegee bottle. The latter is useful for vacuuming out the small amount of water that can make its way into the nose gear well during water-based operations.



Assembly

When starting a fresh build, the first thing I normally do is gather my favorite hand tools. These include a pair of Phillips screwdrivers, one flathead screwdriver, an X-Acto knife with a fresh blade, a pair of curved-jaw hemostats, and a small adjustable wrench.

A quick read of the Seawind’s 12-page black and white photo-illustrated assembly manual (Flyzone also includes a two-page speed controller programming guide) revealed that the bulk of the airframe assembly can be completed without tools! Flyzone engineered an innovative approach to securing the wing halves to the fuselage.

Simply slide each half onto the carbon-fiber spar, guide it into the plastic wing saddle, and rotate the trailing edge upward. A plastic retainer is then used to lock the wing into position. The horizontal stabilizer/elevator assembly similarly keys into the airframe without the need for traditional hand tools.

I noticed that this stabilizer did not sit as squarely as it needed to when mounted to the airframe. I was able to align it by shimming the low side with a thin sliver of balsa.

With the main airframe components assembled, the builder will have to wield a screwdriver or two to mount the two retractable main gear assemblies and to secure the various pushrods into their quick-link connectors.

Access to the somewhat cavernous fuselage interior is gained by lifting the large canopy hatch. Detents on the two cantilever arms lock the canopy into the raised position, which makes it easier to work “under the hood.” The first time that I lifted the hatch on the Seawind, I was surprised to find that the rear-mounted hinge was not engaged in the fuselage-mounted receiver. I figured that popping it back into place would be a quick and easy endeavor, but it wasn’t. As my double dose of patience pills was starting to wear off, I finally succeeded in getting it back into position.




The spring-loaded, aluminum-composition main landing gear proved to be sturdy and dependable.




The cantilever canopy latches in the open position, making flight battery swaps easier.


After the two wing halves have been secured in place, the twin small-diameter flap pushrods must be inserted into the same quick-link connector. The flap servo is positioned aft of the canopy opening, on the roof of the cockpit. Although younger builders will probably breeze through this step, my 50-something eyesight found this task challenging.

The two wing halves are easily removable, thanks to the toolless retainers used to secure them, but I decided that I would refrain from routinely removing them to avoid having to thread the needles again. Fortunately, the Seawind is compact when fully assembled and does not present any storage or transportation challenges.


Flying

Although most of the earth’s water is saltwater, I recommend flying the Seawind off of freshwater. The salinity of seawater can be caustic to unprotected metal parts. Although there are products available that can be used to apply a protective, water-resistant coating to electronics, for the sake of this review and to fully explore the design of this amphibious model, I decided that it was best to forego the application of any such products.

While perched atop my soapbox, I would also like to remind pilots of the risks inherent to flying amphibious models off of bodies of water with currents. Nothing could be more disheartening than helplessly watching one’s upended or battery-depleted amphibious model carried downstream and out of sight.

Pilots who suddenly find themselves in such a scenario have been known to make unwise and potentially unsafe decisions. It is important to respect the water, especially in colder weather.

With that quick word from the safety officer and a site-specific radio range check aside, I was ready to fly the Seawind. Because this model is primarily designed to fly from water, it seemed fitting to head for my favorite local pond first. Modelers with access to a lake that includes a boat-launching ramp will love the way that the Seawind can be taxied across the pavement, directly down the ramp, and into the water. And the reverse of that procedure after landing is even cooler!

The water rudder that automatically deploys from the aft end of the fuselage exerts a respectable amount of control authority during low-speed taxiing on water. The included Fowler-style flaps offer pilots options when it comes to takeoffs and landings. Although I tried plenty of them in a variety of configurations, I found that I preferred executing departures and arrivals with the flaps fully deployed. This configuration helps the Seawind break free from water and land in a shorter distance than when they are not used.




The included flaps enhance the Seawind’s slow-speed capabilities.


Carrying too much speed when attempting to land on water with the flaps deployed often resulted in a multibounce touchdown. Holding the Seawind off for as long as possible, allowing it to scrub most of its forward speed while slightly above the water’s surface, resulted in the best water landings.

Executing picture-perfect landings on the terra firma seemed an easier task, probably in part because of the suspension-equipped retractable landing gear. The Seawind’s stall speed is slow, and when the model finally decides that it is done flying, the stall is semisoft and easily recoverable.

Another feature that I found useful was the bright strobing navigation and solid-white landing lights that come preinstalled in the Seawind’s wingtips. It is not uncommon for California winter weather to include periods of incredibly dense, ground-level fog. During one of the land-based Seawind’s outings, an intense band of fog suddenly enveloped the field.

Although the predominantly white Seawind airframe demonstrated an amazing Houdinilike ability to almost disappear momentarily into the fog, the bright marker lights offered enough orientation cues to allow me to keep flying!

Because fog usually coats everything it touches with a damp blanket of dew, I decided to experiment with landings and departures from the wet grass. Although the grass at the field hadn’t been mowed for a while, I was excited to find that the Seawind was able to land and take off from the grassy green sea with no problem!


Conclusion

Although the Flyzone Beaver has been the king of my amphibious fleet for some time now, the grab-and-go convenience of the Seawind’s retractable tricycle-gear-equipped seaplane airframe has me giving it the noble nod. With the need to swap back and forth from floats to wheels negated, this model is ready to go flying wherever and whenever!

I enjoy the extra level of detail inherent to Flyzone’s Select Scale series of models. Whether in the air, on the water, or in a hangar, the included cockpit details, flaps, and lighting system endow the Seawind with a pleasing level of sport-scale realism.




The Seawind comes out of the box 100% ready for both land- and water-based operations.


Flight duration on 3S 2,200 mAh LiPo batteries, of which many pilots have an ample inventory, can be long and satisfying. The sole caveat, when engaging in water-based flight operations, is that the model requires a more-frequent, thorough maintenance regimen than its land-based counterpart.

Continual exposure to water can cause metal components to rust. I found it best to spend a little time making sure that I completely dried the Seawind airframe. I even used the included plastic squeeze bottle to vacuum the water out of the nose gear compartment before returning it to the hangar. A light coating of machine oil will keep the pushrods from rusting.

The broad, in-flight performance profile and all-weather, all-surface capabilities of the Flyzone Seawind have me committed to keeping this exciting model serviced and standing by for many more flight outings to come!
—Jon Barnes
barnesjonr@yahoo.com


Bonus video


Manufacturer/Distributor

Hobbico
(800) 637-7660
www.flyzoneplanes.com


Tactic

Tactic
(800) 637-7660
www.tacticrc.com




Precision Aerobatics XR-61 ARF

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Written by Mike Hurley
A well-designed and capable aerobat
Product review
Photos by the author
As seen in the June 2016 issue of
Model Aviation.


Specifications

• Model type: Electric sport flier/3-D aerobatic ARF
• Skill level: Intermediate
• Wingspan: 61 inches
• Wing area: 807 square inches
• Length: 57 inches
• Wing loading: 12.76 ounces per square inch
• Ready-to-fly weight: 4 pounds, 9 ounces
• Power system: 1,000-watt brushless outrunner; 70-amp ESC
• Flight duration: 5 to 7 minutes
• Radio: Minimum four-channel transmitter/receiver
• Construction: Built-up balsa, plywood, carbon fiber, fiberglass, and lightweight iron-on covering
• Street price: $299.95; airplane with optional iPAs package: $679.95


Test model details

iPAs Package
• Motor: Thrust 50 brushless outrunner
• ESC: Quantum 70-amp ESC with BEC
• Propeller: Vox 15 x 8 wood and CNC aluminum propeller adapter
• Servos: Four Hitec HS-5245MG
• Servo arms: Carbon-fiber servo arm extensions for the original plastic arms
• Servo wire extensions: Soldered-in lightweight wire


Selected to complete

• Radio system: JR XG11 DMSS transmitter
• Receiver: JR RG712BX (the RG612BX might be more appropriate)
• Batteries: Two PA V3 3S 2,200 mAh LiPo packs; also tested with one 6S 2,200 LiPo pack
• Connectors: Deans soldered-on connectors


Options

• Vortex generators: I flew the airplane with and without vortex generators and noticed little difference. The airplane might be slightly more stable in a Harrier, but I didn’t notice an increase in knife-edge performance
• Carbon-fiber spinner
• Wing bags: Fantastic quality; these are a must.


Pluses

• State-of-the-art design and engineering.
• Lightweight, ridged, carbon-reinforced construction.
• Designed like a much larger airplane.
• Well constructed at the factory.
• No calculations for the drive systems—just build and fly.
• Smooth and docile flight on low rates.
• Stable with powerful control in high-alpha flight on high rates.
• It’s beautiful.


Minuses

• Model required sanding, filing, and fitting.
• A factory-installed motor box would simplify assembly.



It’s been a while since I’ve had the chance to fly anything smaller than a 30% model, but lately I’ve gotten the bug for a small airplane. I have been looking hard at available offerings.

I’ve been building models for many years, and I love the design and sophistication of built-up wood aircraft. Done right, they can be so beautiful. I had already decided to try one of the products from Precision Aerobatics, so when I received the offer to review the company’s XR-61, I was thrilled.

Precision Aerobatics’ designs fit my style and sense of aesthetics. The company’s aircraft are designed much like a Giant Scale aerobatic airplane with slightly more delicate construction and more attention to keeping the structure lightweight.

The engineering and attention to detail of the XR-61’s construction are not only beautiful, but fascinating. It’s like lace made from wood. The computer-designed structures are so fine that if cut and built from only wood, they might have been too sparse, but with the use of Precision Aerobatics’ FiberFusion technology—a combination of thin carbon-fiber lamination and carefully placed carbon-rod reinforcements and crossmembers—this seemingly delicate structure is not only lightweight, but rigid and strong enough to endure the abuse of 3-D hucking (freestyle flying).

When the XR-61 arrived, I was anxious to check it out and happy to see that it was built just like my big airplanes—beautiful carbon-fiber landing gear bolted on from the bottom, wheel pants and cuffs just like my big airplanes, a carbon-fiber wing tube, a carbon-reinforced fiberglass cowl, and even a pull-pull rudder system with Kevlar cables.

There’s a carbon-fiber battery tray and the hatch lifts off with a single pin-style latch. The wings slide onto a carbon-fiber tube and bolt to the fuselage from the inside. All of the servo mounting positions and linkages are assembled as I would do it on a bigger aircraft (but appropriately lighter). It’s a miniature version of an International Miniature Aerobatic Club (IMAC)-style airplane.

The XR-61 is not a scale aircraft and my first impression was that the design seems meant to cross the boundary between precision flight and 3-D. The oversize wing and tail surfaces have a wide chord and large control surfaces for 3-D, but the long fuselage indicates the designer wanted smooth, stable lines. These two features are usually not found on one model when the intent is something such as a fun-fly 3-D aircraft or inversely, a mini aerobatic airplane.

The XR-61’s scalelike look could be mistaken for a scale aircraft that has been optimized for an extreme flight envelope, but the steep canopy angle, long front deck, and stylized cowl give it a sleek, racy feeling, almost like a cross between an Extra and a 1930s-era Thompson Trophy racer.

I’ve built electric-powered airplanes before and used drive systems based on advice from other modelers or recommendations from manufacturers. Precision Aerobatics’ optional integrated Performance Airframe-Drive System (iPAs) made me smile by taking out the guesswork.

The company has done all of the work for you. Precision Aerobatics spent a great deal of time developing the perfect combination of motor, battery, speed control, and propeller so that you don’t have to worry. This isn’t a conservative, underpowered, off-the-shelf offering; it’s a well-designed, no-compromises package optimized to work with the airframe.

The XR-61’s iPAs power package consists of a Thrust 50 outrunner motor, Quantum 70-amp programmable speed controller, a CNC-machined aluminum propeller adapter, four Hitec servos, carbon-fiber servo arm extensions, lightweight servo wire, and a Vox 15 x 8 wooden propeller. I also purchased a pair of 2,200 mAh 3S LiPo batteries, a set of vortex generators, and Precision Aerobatics’ beautiful, lightweight carbon spinner.




The XR-61 is seen here after unpacking. The picture includes the optional iPAs drive system that consists of the motor, speed controller, and more.


With the tough job of choosing a drive system behind me, it was time to start putting the airplane together. Precision Aerobatics includes a detailed, understandable instruction book with clear photographs and a CD with videos of construction techniques, including a short course on soldering that I found useful. Much of the construction on the XR-61 is done for you, including the well-designed pocket hinges for the ailerons.

The two elevator halves are coupled with a carbon-reinforced spar and need to be installed with CA hinges. My elevator halves were not quite perfectly aligned, but they were not off enough to affect flight performance.

The covering on most ARFs needs to be ironed again by the time the model arrives at your home, but the XR-61 wasn’t too bad. A quick stretch here and there was all it took. Be careful; the covering that Precision Aerobatics uses shrinks at low heat. It can pull away if you get too aggressive with the iron. Do not use a heat gun. I noticed that there are a lot of small bubbles under the covering where one color is ironed over the top of a base color.

The elevator and rudder hinges are practically the only things that require CA adhesive for assembly; nearly everything else is put together with epoxy. I found that few steps went together without some custom fitting. This took more time, but it isn’t a bad thing because I have an airplane that I know is fitted perfectly. I had to file all of the servo openings to get the supplied servos in place. I opened up the area around the mounting tabs to get the aileron servos to seat properly in the wings.

The horizontal stabilizers had to be cut, filed, and sanded to slide firmly into place. Additional filing and fitting resulted in perfect alignment with the wing tube. The predrilled holes in the carbon-fiber servo arm extensions all had to be custom fitted.

An insert to the manual advised, “Due to the manufacturing tolerance of the CF [carbon-fiber] wing tube and sleeves, you may experience a tight fit with difficulty sliding the wing onto the wing tube.”

The wing tube wasn’t close to sliding into position on my aircraft. The insert advises to sand the carbon-fiber tube; however, I chose to ream the wing and fuselage sockets using a wooden dowel wrapped with 80-grit sandpaper driven by a cordless drill. This process had to be done with great attention and finesse, removing a little at a time and rechecking it until a good fit was achieved. (Note: Precision Aerobatics now includes a wing tube that fits without modification.)

The motor box fit perfectly in place. After filing the holes for the carbon rods that lock it into position, it could be epoxied in place. At this point, several steps of fiberglass and epoxy are applied to beef up the motor box. It’s not hard to do, but it would have been better had it been done at the factory to save modelers some mistakes and aggravation.




The motor box is installed and reinforced with fiberglass in the assembly process. Precision Aerobatics includes a set of cooling ducts for the motor and speed controller.


After the motor box was completed, the airplane started to come together quickly and in no time I had it ready to test-fly. Precision Aerobatics is adamant about the balance point and the company stresses that the model be precision balanced with an appropriate device rather than using your fingertips. The balance range is 3mm—roughly 1/8 inch!

My balancing device has always been my fingertips, and although they aren’t accurate to within a millimeter or two, they’ve always worked well in the past. I had to wonder why an airplane that is so lightweight, with such a huge chord, has such a narrow center of gravity (CG). The model will fly fine outside of the recommended CG range, but Precision Aerobatics is demanding about how the model handles, so it is specific about the XR-61’s setup. So far, the company’s recommendations have been right on the money.

I started out with throws and exponential settings that were outside of the recommended range; everybody has a personal preference on stick feel and from experience, I know how I like the pitch and roll responsiveness. Rudder adjustments are not critical and can be fine-tuned after you get pitch and roll dialed in.

I placed the batteries to achieve the recommended CG (or as close as I could get with my fingertips) for the first flight. I used the recommended 50° throw for elevator, but I’m not into a lightning-fast roll rate, so I dialed it back from the recommended setting of 45° to 35° for the ailerons.

For high rates, Precision Aerobatics recommends 70% exponential on both aileron and elevator. I went with 60% on the elevator, and since I was down approximately 10° from the recommended high-rate setting, I started with 50% exponential on the ailerons. For me, anything past 60% exponential tends to numb the center too much and speed up the ends of the stick beyond my control, so I generally stay away from those high exponential numbers.


Flying

The XR-61 is super lightweight. On my scale, it’s only 4 pounds, 9 ounces with the batteries installed. The maiden flight was uneventful, but it was windy, so I didn’t get much trimming in. Since that first day, I’ve been able to log quite a few more flights.

The aircraft is built true and needed only a click of elevator and aileron trim. As I flew it, I kept moving the batteries forward 1/8 inch at a time. The tail tended to drop on the landing approach, and if the speed was up or there was a little headwind, it would balloon before settling in. Moving the CG forward slightly took care of this issue.

The feel is that of a lightweight fun-fly type of aircraft that changes directions immediately. At any speed, it will cut a 90° corner with a square edge. Huge wings and low weight mean that the airplane carries virtually no inertia. It will start and stop rolls and turn instantly. The fuselage is thin and the airplane has a small frontal area, so when you open it up in forward flight, the XR-61 is fast.

During 3-D maneuvers, I get the sensation that the XR-61 is as light as a kite. I guess that’s because the airplane doesn’t penetrate as would a heavier aircraft. It stays on the wing longer and doesn’t sink in high-alpha flight until the ground speed is almost nonexistent. This makes 3-D flight easy and controllable.




Inside of the XR-61 you can see the lightweight construction design and Precision Aerobatics’ carbon FiberFusion process that makes it strong. The company recommends a pair of 3s 2,200 mAh LiPo packs for propulsion.




With its low weight and huge wing area, the XR-61 excels in slow, docile flight, as well as high-alpha, 3-D maneuvers. The low frontal area allows the aircraft to fly fast, yet its low inertia means it will react quickly, even at high speeds.


It does rock the wings if you’re sloppy about how you enter into a Harrier maneuver, but it will stay steady if you enter cleanly. The XR-61 is different in how it does 3-D maneuvers compared with a larger airplane. Its entry or movement is forced by the big control surfaces and powerful thrust. The aircraft wants to stop when you center the sticks, while a larger airplane only has to be forced into half of the maneuver, and the second half leaves you trying to control the inertia and counter-correct to stop the model’s continued air penetration.

That also means that maneuvers that usually involve inertia, such as snap rolls, flat spins, or tumbles, are brutally forced with the oversized control surfaces. When you let go of the sticks, the XR-61 stops spinning or tumbling instantly as though it reappeared from hyperspace.

During the first few attempts at high-alpha rolls, I had some trouble getting the airplane to turn while rolling, but after a while, I started to really exaggerate the elevator input while the model was at the point of knife-edge flight, and that got the aircraft moving in the direction I wanted. I eventually could roll in Figure Eights without much trouble. Again, this seems to be because the airplane is so lightweight that it needs a lot of input or it wants to stay where it is.

Precision Aerobatics advertises that the XR-61 needs no mixing on knife-edge flight. I was skeptical because I’ve never run across any aerobatic airplane that truly doesn’t need mixing and flies perfectly straight in knife-edge orientation.

I was surprised to find that the XR-61 needs a fairly high angle of attack in knife-edge flight to keep it from sinking, even with the vortex generators, and I was even more surprised that it really does (more or less), fly knife-edge with no mixing. I use the words more or less because you do have to control the airplane during knife-edge because it tends to wander. As the rudder input increases, it tends to wander more, but at no time did I need to set up a mix with this airplane.




Optional carbon-fiber vortex generators are designed to modify the airflow over the wings and increase stability in high-alpha flight. The author flew the XR-61 with and without the vortex generators with good results.


On low rates, the XR-61 is docile and easy to fly. The airplane requires only half throttle and a short rollout to take off. With a bit of right rudder it tracks straight down the runway. After it’s airborne, you can keep the airspeed down and its character is smooth, easy flight with no surprises.

Rolls require a touch of down-elevator when inverted and loops don’t spiral or start to get scary fast on the back half of the loop. Cuban 8s and Humpty Bumps are slow and controlled, and the neutral rudder input makes for a clean Hammerhead with no rollout. I found myself making frequent Hammerhead turns because they are so easy to do and look fantastic with no effort.

Like any small, lightweight model, the XR-61 moves around slightly in level flight, but I found that it tracked well for its size and weight. It would take some practice for me to be able to fly a clean precision pattern with it, but if you are used to flying airplanes of this size, it will feel stable.


Conclusion

From my flight experience so far, the XR-61 could make a good first sport airplane long before you have the need for a 3-D monster. If you’re looking for a stable, responsive 3-D airplane, this will fit that bill as well.

The bottom line is that there are quite a few sport and 3-D-style airplanes in this size range, but what sets Precision Aerobatics products and this XR-61 apart is the quality. From the engineering design and construction, to the aeronautic design and flight performance, the staff at Precision Aerobatics has scrutinized every detail of this airplane, delivering the highest level of development possible.

I only own a few airplanes and the addition of the XR-61 has moved me back into the world of “normal-size” models. Now I can actually just put something together and go fly.
—Mike Hurley
mhurley222@twc.com


Bonus video


Manufacturer/Distributor

Precision Aerobatics
(770) 292-9122
www.precisionaerobatics.com

Sources

Hitec RCD
(858) 748-6948
www.hitecrcd.com

JR Americas
(217) 352-7959
www.jramericas.com




Horizon Hobby E-flite pawnee brave night flyer

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Written by Greg Gimlick
Simulated crop dusting day or night
Abridged product review
Photos by the author
Read the full product review in the June 2016 issue of
Model Aviation.


Specifications

• Model type: Sport scale BNF park flyer
• Skill level: Intermediate pilot
• Wingspan: 48 inches
• Wing area: 382.6 square inches
• Airfoil: Flat bottom
• Length: 36.6 inches
• Weight: 45.8 ounces
• Power system: BL480 750 Kv outrunner motor (installed); E-flite 30-amp brushless ESC (installed); 11.1-volt 3S 2,200 mAh LiPo battery; 10 x 8 three-blade propeller (two included)
• Radio: Spektrum six-channel AR636A DSMX receiver (installed)
• Construction: Z-Foam
• Street price: $279.99


Test model details

• Ready-to-fly weight: 48 ounces
• Wing loading: 18 ounces per square foot
• Flight duration: 6 to 7 minutes
• Needed tocomplete: Five-plus channel Spektrum DSM2/DSMX-compatible transmitter; 2,200 mAh 3S 25C 11.1-volt LiPo battery and charger


Pluses

• Fast assembly; includes a screwdriver and a wrench.
• Great lighting system.
• Extra propeller included.
• AS3X stability.
• Optional flap hardware included (except servos).


Minuses

• Black paint around battery hatch chips off easily.
• Firewall wasn’t glued to fuselage formers so motor was loose.


Abridged product review

After admiring this airplane on the Horizon Hobby website, I was excited to actually get my hands on one. I did some crop dusting years ago in a full-scale Bell 47 helicopter and loved watching “the big boys” spray from their Cessna AGwagons, AGtrucks, and Piper Pawnees.

When I got the E-flite Pawnee Brave Night Flyer out of its well-packed foam box, I wasn’t disappointed with the look! Everything was wrapped and protected so the finish was pristine, until I started handling it. I immediately noticed that the black paint around the edges of the battery hatch had chipped off, exposing the white beneath it. I touched it up, but during the assembly, it needed more touch up. Aside from that, everything was gorgeous and the box included the only two tools required for assembly: a screwdriver and a wrench.

The finish on the foam is smooth and when the lights come on, it’s impressive. I was eagerly anticipating its first night flight.




The model comes out of the box with little work required to get it ready for flight.




There are several wires protruding from the wing halves after they’re joined. Be sure everything is there and not pinched anywhere before bolting them on.




There are several wires inside of the fuselage. Try to get them as neat and secure as possible. The button inside of the battery hatch activates the interior lights.




The author removed the cowl to glue in the firewall. This offered a good view to see if the battery would contact the motor bolts where they come through the firewall. Protect that area if you see that they’ll rub the battery.


Flying

The power from the 480 motor spinning the three-blade 10 x 8 propeller was more than adequate, and it was up in the air and mission-ready in no time. Tracking was excellent on the takeoff run and control authority felt good despite gusty conditions.

The AS3X stabilization technology nicely dampens bumps from thermals and turbulence. Crop-dusting alone is strenuous and nearly aerobatic, but no self-respecting agricultural pilot would do the things with his or her airplane that you can do with this model. Performing loops, rolls, flying inverted, and even knife-edge flight are possible with the Pawnee Brave Night Flyer. Knife-edge wasn’t pretty, but it’s not in the mission profile, either.


Own the Night

The wingtip lights are always on when the airplane is armed, but there is a button inside of the battery hatch that activates the interior lights. When the lights are on, the model glows beautifully, making orientation at night a breeze. The Pawnee Brave Night Flyer is nice and stable, so it is a great platform with which to gain some night-flying confidence.




The optional flaps were worth the effort. When fully deployed, they slow the model to a crawl.


Conclusion

I might never be a full-scale agricultural pilot again, but the Horizon Hobby E-flite Pawnee Brave Night Flyer brings back memories. I think E-flite has a winner in this one.
—Greg Gimlick
maelectrics@gimlick.com


Bonus video


Manufacturer/Distributor

Horizon Hobby
(800) 338-4639
www.e-fliterc.com


Sources

Spektrum
(800) 338-4639
www.spektrumrc.com





RC Logger NovaX 350

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Written by Terry Dunn
A refined aerial platform
Abridged product review
Photos by Bryan McLarty
Read the full product review in the June 2016 issue of
Model Aviation.


Specifications

• Type: Prebuilt multirotor
• Frame diameter: 350mm
• Radio: Eight-channel 2.4 GHz system (included)
• Minimum flying area: Large park
• Price: $569.99
• Power system: Four outrunner brushless motors with 8 x 4.5 propellers and 30-amp ESCs; 3S 5,200 mAh LiPo battery (all included)
• Flight duration: 12-plus minutes
• Flying weight: 42.3 ounces; 50.5 ounces with X3 gimbal and GoPro HERO3 Black


Pluses

• Excellent flight characteristics.
• Easy to work on and upgrade.
• Superb informational resources.


Minuses

• Transmitter switches not marked.
• Battery is somewhat difficult to unplug.



Most RTF multirotors are built as if the components inside of them are top-secret. Sure, their stylish, plastic enclosures are nice to look at, but these aircraft often require major disassembly to access the electronics for upgrades or repairs. The RC Logger NovaX 350 is a different type of RTF multirotor. Although all of the onboard components are protected and hidden from view, everything is easily accessible if you want to make a change—or to have a look at what makes it tick.

The NovaX falls into the 350mm class of quadcopters. The class designation denotes the distance between one motor shaft and its catty-corner partner. This class of quadcopters is popular because it can carry an action camera, such as a GoPro, for aerial photography. As you will see, they can be fun sport fliers, too.




After you unclip the quad’s protective outer shell, the electronic components can be accessed for upgrades and repairs.


Examining the NovaX 350

The NovaX requires little assembly. It’s only a matter of installing parts such as the propellers and landing gear. Don’t get in too much of a hurry to get airborne, because as with any sophisticated multirotor, there is plenty of verification to be done to ensure that all of the systems are shipshape.

An eight-channel, 2.4 GHz radio system is included with the RTF version of the NovaX. It is a standard-size transmitter with four switches and two dials. Only six channels are needed to control the NovaX, so you get two auxiliary channels to operate add-ons, such as a camera gimbal or retractable landing gear.

The included battery is a three-cell LiPo with a 5,200 mAh capacity. It comes with an XT-60 connector. An AC-powered charger is provided as well. Although the charger has a 3-amp charge setting, it is limited to 20 watts overall. The actual charge rate with a three-cell LiPo is less than 2 amps. It typically takes approximately 3.5 hours to charge a fully depleted battery.

Before flying my NovaX, I installed the optional illumination kit. This kit adds a strip of bright, multicolored LEDs to each arm of the frame. Although they are bright enough to see in daylight, they look best when the sun is setting. The lights can be customized during flight to display solid colors or ever-changing patterns. They are controlled by the EYEControl smartphone app, which links to the NovaX via Bluetooth.

The EYEControl app has other functions. It is the primary interface for calibration, configuring the control sensitivity, and enabling the geofence options. The app is easy to use, and the tutorial video for using EYEControl is helpful.




The NovaX 350 requires only rudimentary assembly steps. Everything needed for flight is included.




A programmable illumination kit can be installed on the NovaX 350. The bright lights are best seen at dusk, but they are also visible in daylight.




The EYEControl smartphone app provides a visual interface for configuring numerous parameters of the NovaX 350. Here, the author has configured a custom flight bank.


Flying

One thing I noticed about the NovaX is that it is exceptionally quiet. Many 350-class quadcopters produce a loud, irritating note. That is not the case with this multirotor.

The radio system has integrated telemetry functions. The screen on the transmitter can display parameters such as altitude, distance, and flight-battery voltage. The latter value is useful to avoid running the battery flat. Even if you’re not monitoring the telemetry, the transmitter will beep to warn you when the flight battery is getting low.

Should you choose to ignore the warnings, the NovaX will simply land on its own before the battery dies. Depending on the payload and how aggressively I’m flying, I get 12 to 17 minutes of flying time.




The 3S 5,200 mAh LiPo battery is held in place with a rubber strap. Short wires make the battery connectors somewhat difficult to separate.


Conclusion

The selection of good choices makes it tough to shop for a 350mm multirotor, but the NovaX 350 is different from most of the other aircraft in this class. Although it is an RTF model and flies well, all of the components are easily accessible. This makes the NovaX easier to understand, work on, and upgrade.
—Terry Dunn
terrydunn74@gmail.co
m


Bonus video


Manufacturer/Distributor

RC Logger
(582) 2559-2662
www.droneart.com/product/novax-350


Sources

Vimeo
www.vimeo.com/rclogger




DGA-3 Pete

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Written by Paul Kohlmann
Build a retro racer for your recycled gear
Construction article and free plans
As seen in the June 2016 issue of
Model Aviation.




Download free plans

Click here for plan #1 at full size (22" x 17")
Click here for plan #2 at full size (22" x 17")
Click here for plan #1 tiled (8.5" x 11")
Click here for plan #2 tiled (8.5" x 11")



Specifications

Wingspan: 20 inches
Length: 17.75 inches
Weight: 3 ounces
Power system: UMX brushed motor or E-flite BL180
Battery: 1S 180 mAh LiPo


Construction article

Some time ago, while looking for a new aircraft to design, I ran across a photo of a little racer with a towering scoop in the nose. Leaning against the wing was a crafty-looking character whom the caption identified as Benny Howard. The airplane was the DGA-3.

Built in 1929, the DGA-3 was nicknamed “Pete” and flew on a 326 cubic-inch Wright Gipsy inline four-cylinder 90 hp engine. This setup allowed Pete to fly at roughly 160 mph, which wasn’t that fast even for its day, particularly when one considers the competition that Benny faced when he raced for the 1930 Thompson Trophy.

Benny found himself up against two Travel Air Mystery Ships, the Laird Super Solution, and Capt. Arthur Page’s ill-fated Page Racer—all of which had top speeds well above 200 mph. But Benny was tenacious and hung in while a number of other entrants dropped out because of mechanical failures and Capt. Page’s fatal crash. When it was over, Benny captured third place and a purse of $2,000.

While the development of the Pete allowed Benny to cut his teeth as a racing airplane builder, this aircraft significantly advanced his career in other ways. The Pete’s winnings funded the development of more powerful racers—namely a pair of DGA-4s nicknamed Mike and Ike. Eventually, the Pete was sold and its proceeds went toward the development of the Mr. Mulligan.

Miraculously, the Ike, the Mike, and the Pete are all still around. The Pete has been flown in recent years and is currently housed at the Crawford Auto Aviation Museum, part of the Western Reserve Historical Society, in Cleveland.


Design

The goal of this design was to repurpose an AR6400 “brick” from a worn-out UMX T-28. The brick is a compact little system that integrates a Spektrum receiver, brushed 1S ESC, and two servos into a tiny, 3.9-gram package.

The result is a 20-inch Free Flight-style (FF) airframe with full-house controls that weighs 70 grams. The tiny Pete flies well on the brushed 1S motor, but today there are more powerful bricks with 2S brushless ESCs in similar-size packages. My Pete will be ready for this upgrade as soon I can distract my son’s attention while he’s flying his UMX Beast.

The plans for the Pete have been cleaned up and are offered through Model Aviation as a free download. It’s a simple little project that can be cut by hand. Alternatively, a nice laser-cut kit is available from Manzano Laser Works.


Building Pete

Begin the project by laminating the outlines for the tail group and the wingtips. This process will sound more difficult than it is. If you try it, you will find that the resulting outlines are stronger and lighter than those built-up from balsa sections.

The first step is to cut 1/32 x 3/32-inch strips from the edges of the kit wood. Soak the strips overnight in water mixed with a splash of ammonia.

While the strips soften, make forms by tracing the inner edges of the outlines from the plans onto sheets of paper. Glue the tracings to foam poster board. Cut along the lines and pop the forms free. Cover the cut edges with clear packing tape so that glue won’t stick to them.

After pinning the forms to the building board, pull one softened balsa strip tightly around each form, pinning it into place as you go. Apply carpenter’s glue to a second strip. Stretch this strip around the first while moving the pins to hold the pair tightly against the form.

After it has completely cured, remove the outlines from their forms and pin them down to the plans. Glue the kit parts that form the inner structure in, followed by the 1/32 x 3/32-inch balsa bracing cut from the kit wood.

Split the control surfaces by cutting through the outlines where shown on the plans. Bevel the leading edges (LEs) of the elevators and the rudder to allow ample deflection. Narrow CA hinges work great on these tiny models.




Laminated outlines, kit parts, and 1/16 x 3/32-inch bracing make up the lightweight tail group.


The Fuselage

The fuselage is constructed in the FF style. Two flat side frames are built from 3/32-inch square longerons that are spaced by partial formers. After the side frames have cured, pin them over the top view and join them with the top formers. Tie the top formers together with the balsa keels K1 and K2 and a long stringer on each side where the scoop/turtledeck meets the fuselage.




The left and right side frames are built from 3/32-inch square balsa longerons and side formers.


Carefully remove the assembly from the board and add bottom formers F2 through F7. Glue the end formers F1 and F8 into place at each end. Tie F3, F4, and F5 together with the wing saddles S.

Glue in five stringers on each side, but leave the belly open for now. This will make it easier to install the insides. These stringers all run from F1 to F8. Now that the assembly is rigid, sheet the scoop with 1/32-inch balsa and the turtledeck with heavy paper.

Glue the cowl parts C1 through C4 together by aligning the octagonal opening in the center. Glue the stack to the front of the fuselage. Make way for the wing by cutting out the lower longerons between F3 and F5.




Side frames are joined with upper formers, keels, and a stringer on each side. The bottom formers go in next.




After finishing the formers and stringers, sheet the scoop with 1/32-inch balsa and the turtledeck with paper.


Wing

The wing is built up from a handful of kit parts, the wingtip outlines, and a few stringers. Begin by pinning the trailing edges (TEs) and main spars to the plans. Glue the laminated outlines to the TEs and main spars.

Use the dihedral gauge from the plans to set the angle of the center ribs while gluing them into place. Now glue in all of the remaining ribs perpendicular to the board. Tie the ribs together with two 1/16-inch square balsa stringers on the upper wing. Now glue in the LE cut from 1/8 x 1/4-inch balsa.

Finish the wingtips by adding the two wingtip formers. Now add the aileron parts in numerical order, but don’t glue A1 and A2 together! These two parts form the parting line between the wing and the aileron. Unpin the wing and add the bottom stringers.

Sand a smooth radius into the LEs and a nice taper into the TEs. Now lightly sand both wings until all of the parts blend seamlessly.

Cut the ailerons free where shown and bevel the LEs of the ailerons to allow plenty of deflection. I used torque rods and CA hinges to control the ailerons on the prototype. After the controls are in place, join the two wings together. A wire wing pin in the LE and rare earth magnets at the TE were used to hold the wing in the pocket.




The wings are nearly ready to shape.


Landing Gear and Guts

The full-scale Pete has a funny triangular landing gear arrangement. This model replicates that with balsa struts that are reinforced with .032 music wire. This assembly plugs into the center ribs in just two points.

The full-scale Pete uses bracing wires from the axles to the mounting blocks in the wings to steady this arrangement. The 20-inch version needs bracing wires, too. Kevlar fishing line works well for this.

For the prototype, I used every bit of the deceased T-28’s control system. The brick was attached to scrap balsa rails between F2 and F3 to keep the weight forward. The pushrods were lengthened because the Pete is slightly larger than the T-28.

The spinner was made from soft balsa turned on a drill. It is small, so only a few minutes with a sanding bar and a file to cut the propeller slots did the trick. The spinner was adhered with silicone to a 160mm x 70mm propeller attached to a UMX P-51 brushed motor and gearbox. After it cured, this assembly was secured with silicone to a scrap balsa plate in the nose by aligning the spinner to the front cowl former.




The center ribs are reinforced with scrap balsa to accept the Pete’s spindly landing gear. Bracing wires running out to the wings provide needed support.


Covering and Paint

The Pete was covered with lightweight Japanese tissue from Easy Built Models. I applied Elmer’s glue stick on the framework and then positioned lightly dampened tissue over each section. A little heat from a trim iron activated the glue while drying and tightening the tissue.

After all of the tissue was on, it was sealed with two coats of diluted water-based polyurethane. This was covered with three coats of thinned, gloss-white latex paint applied with an airbrush.

The prototype’s markings are homemade decals printed from a custom file. My favorite is the illusion of the exposed engine—the cowl on the full-scale Pete was cut away to aid in cooling.

The decal was made from a high-resolution photo provided by Kevin Dahlhausen. Kevin’s walkaround photos of the original Pete and the graphics file can be found in the build thread on RCGroups referenced in the “Sources” list. Vinyl graphics are also available from Callie Graphics.




The Pete is covered in tissue, sealed with water-based polyurethane, and is ready for the paint shop.




The Pete’s internals and unique landing gear arrangement can be seen to good effect.


Flying

Although the Pete weighs nearly twice what the UMX T-28 did, it has no problem getting off the ground and zooming around the field using the 1S brushed setup. At 70 grams ready to fly, takeoffs require a moderate rollout, and landings are a breeze. But there isn’t a tremendous amount of power for the aerobatics.





As previously mentioned, a variety of 2S power options have become available since I built the prototype. One of the more notable is the E-flite 180BL 2,500 Kv motor found in the UMX Beast and other 2S micros. I’ve added the outlines for a simple motor mount to the drawing for builders interested in using this powerplant.
—Paul Kohlmann
ptkohlmann@aol.com


Sources

Manzano Laser Works
(505) 286-2640
www.manzanolaser.com

Horizon Hobby
(800) 338-4639
www.horizonhobby.com

Build thread
www.rcgroups.com/forums/showthread.php?t=1364090

Easy Built Models
(334) 358-5184
www.easybuiltmodels.com

Callie Graphics
info@callie-graphics.com
www.callie-graphics.com




I Am the AMA - Bob Underwood

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Written by Jay Smith
Bob Underwood: Modeler, educator, administrator, motivator, and lifelong learner
Extended interview from the June 2016 issue of Model Aviation


Jay Smith:How did you get involved with model aviation?
Bob Underwood: The first question and I am stumped! I really haven’t the foggiest idea what prompted my interest. I vaguely remember a white, rubber-powered model that my dad and I took to a contest in Forest Park in St. Louis. It would have been in the 1930s, and possibly it was a Plymouth meet. There was one flight—sort of—that was very short and included a well-defined stall and ended with an outstanding crash!

Although my dad did not build model airplanes, he was very detail oriented, observant, and did create an excellent, scratch-built shelf model of the Mayflower. It had hand-carved divots with small holes that were drilled employing a tiny finger-twisted drill encased in masking tape. The rigging was composed of thread involving many thousands of hand-tied knots.

Whatever aviation-oriented impulse that inhabited my brain was greatly encouraged by my dad and resulted in my continuing to build flying models through the 1930s and ’40s. Kits were intermingled with scratch-built Control Line and Free Flight (FF) projects and ranged from rather normal to really odd.

By far, the most successful fliers were the many Thermic 50 towline models. A scratch-built FF aircraft powered by a tired, really used O&R engine that managed “fantastic” flights of perhaps a minute (maximum) and an altitude of 30 feet! Of course, that was only contingent upon my getting the points, condenser, and coil to all work at the same time! It was a time of learning.

As an introverted kid and a loner, any modeling skills I learned were by trial and error. The scratch-built models all employed the “LAR” (looks-about-right) design technique. I was convinced I wanted to become an aeronautical engineer as I entered high school. Had I continued on that course, it might have resulted in an engineer who did not like math and never really figured out a slide rule!

Strangely, my model airplane activity abruptly stopped in 1946 and was replaced by cross-country, track, and photography, as well as the desire to become an elementary school teacher. The latter happened and model airplanes did not reappear until 1966!



JS:How has model aviation impacted your life and/or career?
BU:“Greatly” would be the simple answer, however, within four years of that 1966 date, the words “model aviation” became “AMA” and “your” became “our” lives and/or careers.

The support of my wife and two daughters for my actual airplane building, as well as competing in and organizing events, included their participation as well. Although they didn’t build or fly models, by 1970 they had become deeply involved in AMA activities.

My participation as a competitor afforded all of us opportunities to travel, both nationally and internationally. Additionally, there were many other local, national, and international events and shows that we worked at in various capacities such as souvenir sales, Delta Dart building programs for kids during the Nats, trade show booths, administration, score tabulation, hosting at international events, etc.

In 1985, the impact on our lives changed more dramatically. In 1982, John Worth [then AMA executive director] asked me to join the AMA staff. In July 1985, after I had completed 30 years of teaching fifth-graders in the St. Louis area, I became the AMA Technical Director and we moved to Virginia.

It was then that my wife and I more clearly understood that AMA wasn’t just about model airplanes; rather it clearly was about two very important things: people and educating!

Model airplanes began to serve as a tool, aiding us in creating meaningful human relationships. For me, the root that could be identified as “model airplane” in my life had grown into a tree with many branches labeled technical, recreational, competition, administrative, promotional, social, and most importantly, educational. I learned as I taught!

The unnumbered hours of scratch-building models for competition, the gazillion hours of committee meetings for the AMA and the FAI, and the hundreds of columns written for various magazines, tended to pale in comparison to the wealth of rich friendships which were generated through our family’s AMA attachment as volunteers, participants, and staff. In truth, I see this page not as “I Am the AMA,” but rather “We Are the AMA.”



JS:What disciplines of modeling do you currently participate in?
BU: I still fly RC, but mostly just with my grandson. At age 15, his reflexes outstrip mine. The best I can do now is to instill some discipline to the mix and end the simple boring of holes in the sky.

I’ve backed away from the competition in which I was so intensely involved for years—especially around 1977 when I formed the AMA Special Interest Group, the National Association of Scale Aeromodelers (NASA).

The awards from contests, AMA, NAA, and FAI grace walls and shelves in our home and evoke rewarding and pleasant memories. Unfortunately, at my age now travel is more difficult, and once I’m at the field and on the ground, repairing something it’s really hard to get back up!



JS:What are your other hobbies?
BU: I have a love of music and singing, although other than our church choir, there is not much demand for 85-year-old tenors, especially those who didn’t have a solo-quality voice to begin with. But my return to my early love of photography has caused my iMac to light up with many beautiful scenes and memories, both for the Underwoods as well as for our church for which I serve as a photographer.



JS:Who (or what) has influenced you most?
BU: My mother and father instilled curiosity and a willingness to never stop learning, to be patient, listen carefully, to be observant, and ask the difficult question. Those have held me in good stead as I came in contact with the thousands of individuals and experiences along my modeling road.

Those individuals have not all been modelers! I have learned many techniques and skills that I applied to my building and association administration that came from next-door neighbors as well. In competition, I discovered I always learned more when I didn’t stand on the winner’s platform than when I did.



JS:When thinking of all your aeromodeling accomplishments, what are you most proud of?
BU: I believe the answer here is having had an opportunity to try to be an educator, facilitator, and motivator for our activity! Just a month ago, I sensed a degree of success in that endeavor. As a District VI associate vice president, I attended a Greater St. Louis Modeling Association meeting to assist with some discussions.

At the conclusion of the meeting, a man came up to me and indicated that I had met him and his father in the 1970s when he was 11 years old. They had become interested in modeling and were looking for help. Although I honestly don’t remember the meeting or the subsequent connection, he emotionally thanked me for having started him on what is now his life career.

Both moved and taken aback by his sincerity and fervor, I extended my hand to shake his. What I received was a big old bear hug instead! That experience was certainly worth a lifetime of waiting for glue to dry, burned-out glow plugs, and vertical landings in the middle of a field!



A peek around Triple Tree at Joe Nall 2016

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Written by Chris Savage
Abridged event coverage
Video by Chad Budreau and Nick Murhling
Read the full coverage in the September 2016 issue of
Model Aviation.


A sneak peek at Joe Nall 2016

Pilots from around the world lined up last week, hours — and in some cases days — in advance, to secure their favorite spots at one of the most coveted flying sites in the US: the Triple Tree Aerodrome in Woodruff, South Carolina. Joe Nall week took place May 7-14, 2016, and the event’s website boasted more than 1,700 registered pilots from 46 states and 14 countries!

AMA’s Chad Budreau was lucky enough to spend a day at Triple Tree this year and was impressed with what he saw. Although a thunderstorm put an abrupt end to AMA’s membership meeting, flightlines along the sprawling lush runways were filled with aircraft of every kind, and floatplane pilots took full advantage of the flying site’s beautiful lake.

Although the weather was hot, more than 80 vendors were set up at the site’s expanded vendor area. The volunteers’ hospitality and the event’s great pilots and attendees made for a relaxed and light-hearted atmosphere.

Model Aviation will provide coverage of Joe Nall Week in the September 2016 issue. For now, check out the video below and see how much fun you can pack into a single day at Triple Tree!


Sources

Joe Nall Week
http://www.tripletreeaerodrome.com/joe-nall-week.php


Sneek peek video




Red Flag

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Written by Barry Vaught
A World-Class RC Jet Competition
Event coverage
Photos by the author
As seen in the July 2016 issue of
Model Aviation.


Something magical happened at Paradise Field in Lakeland, Florida, during three days in early March that will be remembered as one of the epic international RC jet events of 2016.

More than a year ago, Frank Tiano thought that jet pilots and builders would enjoy a new aerobatic jet event where they could compete with each other on a higher level. While sitting around with his friend, Peter Goldsmith, the pair decided to name the event Red Flag.

Frank would handle acquiring and preparing the venue and he recruited Ray Labonte to be in charge of everything else. The team concept worked well and the inaugural Red Flag RC Jet Competition was born.




(L-R) Announcer Sam Wright, Frank Tiano, and Ray Labonte all did an outstanding job of coordinating the inaugural Red Flag event.


During the March 7-9 event, two flightlines were in operation. There were several event classes with some pilots flying in more than one class. The competition was fierce and very close in some of the categories.

It was impressive to see the jet pilots performing the flight patterns and freestyle maneuvers so well. The inbound/outbound flight paths were separated for safety and the pilots were asked to perform a photo pass, which would also help alert the next pilot to prepare for flight.

Ray brought a team down from Maine to make sure everything went smoothly, and it did. Thank you to AMA Education Director Bill Pritchett and the AMA for providing real-time scoring. The audience participated in the judging, which was live online at the Pattern Score Board (see “Sources”). There was also a giant-screen monitor where the pilots and fans could view the latest scores.

The morning classes included Scale, Sport, Electric, and Intro Jet. Peter Goldsmith earned the top score in the Aerobatic Scale Jet class. He said that it felt great to fly his Skymaster F-19F Cougar in the Scale Pattern and that this aircraft was the best choice for the Scale class.




The first Red Flag Scale Jet Pattern champion, Peter Goldsmith, with his Skymaster F-9F Cougar.



Scott Geller’s 1:5.5-scale Mibo A-10 Warthog weighs 55 pounds. This stunning aircraft has a 118-inch wingspan.



James Martin’s 1/7-scale Skymaster F-14 with its swing wing is powered by Jet Central Cheetah turbines.



Jack Diaz’s Huff BVM F-86 was one of many impressive military jets in attendance.


Jason Shulman earned the top score in the Aerobatic Sport Jet category. Jason wanted to fly in a jet Pattern contest because he is a diehard Pattern pilot who loves competition. He said he only gets to fly jets once a year and the Red Flag schedule was perfect timing.

Jason feels that the best way to prepare for a jet Pattern event is to participate in regular Pattern events, or at least to go and watch for a day. He suggested asking pilots questions (but not while they’re in the ready-box to fly) and questioning anything that you don’t understand. Check out the National Society of Radio Controlled Aerobatics (NSRCA) website for information that could easily translate into jet Pattern flying.




Archie Stafford’s 35-pound Tomahawk Futura 2.5m jet placed third in the Sport Jet class.



David Malchione Jr.’s BVM Ultra Bandit relied on a JetCat P-200 turbine for power.


Carlos Silva earned the top score in the Electric Jet class and Jose Melendes earned the top score in the Aerobat Intro category.

The afternoon was filled with music, multicolor smoke trails, skywritten hearts, formation flying, and amazing talent. Classes that were flown included Team and Individual Freestyle Jet. Californians Mike Adams and Ken McSpadden (Team Viper) earned the top score in the Aerobatic Team Freestyle and Italian competitor Sebastiano Silvestri earned the top score in the Individual Freestyle. Sebastiano Silvestri is a 15-time Italian champion and two-time World Cup F3A champion. He flew some of the same patterns in Red Flag that he flew in F3A.




Red Flag Team Freestyle champions Kenny McSpadden (L) and Mike Adams display their Skymaster Vipers and well-deserved trophies.



Sebastiano Silvestri flew his Sebart Avanti XL with smoke on during the Individual Freestyle competition. His outstanding performance earned the top score in that class.



The Red Flag Individual Freestyle champion, Sebastiano Silvestri (L), along with Daniela Salinetti.



Azza Stevens’ green Rebel Pro was easy to see in the air. The JetCat P-180-powered model earned third place in the Individual Freestyle class.



Team Horizon’s Marc Petrak and Stefan Wurm flew Precision Team Aerobatics in the Freestyle Team class.


It was great to see possible future pilots involved. Pilot Boli Muentes daughter, Marley, and pilot Jose Melendes daughter, Jayleigh, have influence over their fathers’ respective pilot figures and color schemes. “Major Marley” is the pilot figure in Boli’s Scale F-16, and Jayleigh convinced her dad to use the Disney movie Frozen’s color scheme on his pink Dolphin Sport jet with “Anna” as the pilot.

Congratulations to Frank, Ray, and everyone else who was involved for the entertaining inaugural Red Flag RC Jet Competition 2016. Red Flag 2017 is planned for November 1-4, 2017.

For more information, visit Frank’s website listed in the “Sources” section.
—Barry Vaught
bvaught@cfl.rr.com


Red Flag Final Standings

Sport Jet
1) Jason Shulman
2) Sebastiano Silvestri
3) Archie Stafford

Scale Jet
1) Peter Goldsmith
2) Bernhard Kager
3) Mathias Hocke

Electric
1) Carlos Silva
2) Tyler McCormack
3) Bob Violett

Aerobat Intro Category
1) Jose Melendes
2) David Malchione Sr.
3) Shneider Fajardo

Freestyle
1) Sebastiano Silvestri
2) Quique Somenzini
3) Azza Stevens

Team Freestyle
1) Team Viper: Mike Adams, Ken McSpadden
2) Team Horizon: Marc Petrak, Stefan Wurm
3) The Ultra Bandits: David Malchione Jr., David Malchione Sr.


Sponsors

Primary Sponsors
Zap
Model Airplane News

Associate Sponsors
Horizon Hobby
Spektrum

Supporting Sponsors
Fly RC
RC Sport Flyer
EZ Balancer
Florida Jets Fly Girls


Bonus photos

Model Aviation Magazine - Red Flag 2016


Sources

Red Flag/Frank Tiano Enterprises
www.franktiano.com

Jet Pilots Organization
www.jetpilots.org

Pattern Score Board
www.patternscoring.com

NSRCA
http://nsrca.us

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