ORIGINAL: kingdom802
Interesting, we had this coversation this weekend at the field.
My position:
If you "have to have" expo on your aircraft then in my opinion either the aircraft is too sensitive or you are not ready for that particular airplane and or you need more experience just plain flying.
hmm interesting...
I use 80-100% expo on ailerons (low, high and 3D rate). Why? I saw that CPLR uses that amount, so gave it a go, and liked it. I'd have trouble telling him he was not ready for his planes or needs more experience
Expo, like rates, mixes etc, is there to help you fly your plane the way you like it. Set it to the way you want it, but dont be afraid to tying different amounts to see what you like.
EG, I use three rates (as above, low, high, 3D), and generally Aileron expo is 80-100%, elevator is 40-60%, rudder 30-40%. A friend has no rates, but has 100% expo on all surfaces. All personal preference.
Incidentally, on a normal (non 3D) plane you have to get to about 30-40% before you just overcome the nonlinea output you get from a servo. On 3D planes actually less is needed, as the control surfaces mimic the servo output far more closely due to their high deflections.