ORIGINAL: Crash90
Why not program the servos for maximum throw, (rather than desired deflection) then mechanically set the deflection on the control surface? This would guarantee maximum mechanical advantage. No?
That's what I described above -- it is the maximum deflection recommended by the airplane manufacturer. Use the Dual-rate function to reduce the throws. Of course there is no reason you can't program more than the recommended maximum and use the dual-rate function to reduce them.
BTW, what do you mean when you say mechanically set the deflection? Once you program the servo you DON'T want to make any manual control adjustments (leave control horn and servo arm adjustments alone)-- you will throw off the programming. Likewise, you don't want to make any subtrim or endpont adjustments with your TX, again you will throw off the programming.