Originally Posted by
Top_Gunn
I doubt that there is any plane that needs opposite rudder and aileron to turn. Perhaps one of your servos is reversed. Most planes turn by banking, which you do with the ailerons. The rudder is used in turns to keep the plane from yawing in the direction away from the turn.
I know we are talking here about trainers and flat turns, but in many Imac turns, flying in the box, many aileron turns are hard banked and approach knife edge. Opposite rudder is often needed to keep the nose from dropping to prevent down grading in the maneuver