RE: Scratch Designing RC Airplanes
CafeenMan - The servo is a GWS SOT3 (I think that's right - going from memory) - it's a standard size servo - puts out 111 oz-in at 6 volts - my aileron is about 2 1/2" x 18" - so roughly 45 sq in. I just used standard Tower Hobby 44 oz-in servos for the flaps (one per flap). Used the same GWS servos for the rudder and the elevator.
Ramrod25