ORIGINAL: ram3500-RCU
The subject is expo. Expo relates to the 'feel' of the stick. It was in this context that I referred to the amount of movement on the stick, and how that correlates to the location of the push rod connection on the servo arm. Again, torque, or mechanical advantage (leverage), is not in question when discussing expo. It is an entirely different issue during setup. No less important, just a completely different subject.
Actually, the OP asked about expo as a way to reduce the sensitivity of his ailerons. Either reducing travel or adding expo will solve that problem, but expo will only reduce the sensitivity around center, leaving the sensitivity at high stick movements and total travel the same. It is best to optimize the limits of travel (mechanically or with ATV/EPA) before deciding that expo is needed.
Jim