JD designs a RC airplane

[Jerry Dunlap]

There was some 1/4" foam board from the Dollar Tree remaining after an auction hosted by my Kiwanis Club. Having seen many r/c profile model airplanes, I decided to try designing/building one. I have a good supply of model airplane motors, escs, and servos after crashing my share of RTR airplane.

The wing span was 36" and it was 30" long. I used CA glues and Gorilla Glue to build it. I've done enough models to know about where the CG should be on a wing. It was rudder/elevator/motor and it actually took off and gained about 200' of altitude. After about 15 or 20 seconds, the wing folded followed by a rather steep decent to the ground. Other than a broken prop, smashed fiber board, and an appreciation for wing loading, all the on board equipment survived.

JD

 

[Keith Halverson]

Not to bad Jerry,,seen worse. Glue it back together and add a CF spar full length. Dump the landing gear and just skid land it in the tall grass.

My YF-22 was a handful, until I got the elevon rates figured out. That profile flips over inverted and it gets exciting real fast,,with elevons. I had some world caliber saves with that thing,,along with more grey hairs.

 

[El Zorro]

A full span spruce spar a few inches behind the leading edge of the wing ( and maybe a 12" length of carbon fiber in the center section? ) would have extended the life of your aircraft. A strip of spruce where the elevator attaches to the stab would help, also. Looks like it can be a good flyer.............great job!

About 30 years ago one of the local competition free flight guys asked me to do some engine work for his airplanes. He built beautiful airplanes that flew very well. Just needed some more power to get more altitude. I modified a .15 and a .21 engine for two of his airplanes. He came over the house after having been flying that weekend and was pretty excited. The good news was he was really pleased with the performance of the engines. The airplanes took off like a rocket. The bad news was that both airplanes had the wings fold up in half before the engine cut-off timer stopped the engine!. He made new wings and reinforced the top and bottom spars with carbon fiber and went on to win many regional and national events for a number of years. Things need to be stronger when you throw a bunch more horsepower at it.

Dick Tyndall

 

[Tom Foley]

Supertigre 51 with pipe and ...............

 

[El Zorro]

...................NOW you're talking!!!