BTW, C/L actually IS about the best test system ever devised for leisure-time-engineers. Every flight is extremely controlled in speed. Timing is extremely accurate since there are no unknowns. And model response to input is not only perfectly seen but you feel it as well.

When we were trying to see what that "fat flap" deal was doing for us, we had it made. A stunter had to fly level, make threshold turns, fly round stuff, and the exact speed mattered. And all that was easily seen and felt or timed. And we did it again and again and again. We got to see what a change of a couple mph did. And knew the exact mph. Most people can't tell the difference in 60mph and 70mph with an R/C plane and have no simple way to time them.

whatever............ keep those ailerons on that airplane.

(A threshold turn is a MAXIMUM, at the threshold of what the model can do without breaking apart, turn. Setup your next ARF to make close to a 5' radius turn and see what it does. Take a sandwich bag to bring home the trash.)