ORIGINAL: TonyBuilder
<div>do you need to start stepping up servo torque for dual aileron planes and higher performance planes in this size range?. </div><div>TB</div>
IMHO No.
Standard servos, maybe ballraced, will serve perfectly well for sport flying. Using 2 aileron servos will reduce the individual servo load (although increase the battery power slightly).
Unless you are using very abrupt control movements, at high aircraft speed, on a larger model, you won't see much benefit in going to digital/high-torque servos.