Depending on the radio you use expo settings can be different. I know that for a Futaba rado, you must use NEGATIVE expo to soften things around neutral. On JR radios, I was told that you must use POSITIVE expo to achieve the same result. Check your manual carefully, as you might be in for a wild ride if you use the wrong setting.


In my case, I use 80% expo on the elevator, but I have set ultra-high rate and my CG is quite a bit behind what's suggested in the manual. Ailerons are at 25% expo and I can fly the plane without expo on ailerons no problem. I agree to use about 25-30% as a starting point if you use the throws and CG settings recommended in the manual. From there, adjust to your liking, a bit a a time...