ORIGINAL: MinnFlyer
Another thing that is interesting is how back in the 70's we used to fly some BIG airplanes with a single standard servo for BOTH ailerons, but now they say you need two on a 40-size plane.
Ever think they're just trying to sell more servos?
You remember ANY .40 sized models in the 70's that had a 2" aileron throw?
We're control surface happy now-a-days.