HI All I have 3 quick questions, that I need some thoughts or coments on.I will be using a Futaba 6xas radio
1. Differanal= more up aileron then down..What effect on flying will this do? What is used to set it up/RTV or Sub Trim.?
2. Airbrakes /Spoilers. I have it set so both ailerons rise,but when turning with this set up the ailerons only go back as far as netural?/ no downward aileron?
3 Expo/ Just finished a 60 Cloud Dancer. Put 50% Expo in for the ailerons n elevator..Just trying to make the plane eaiser to control.
The oldtimers down at the field don't like expo.. Need sosme thoughts n comments
BTW I'm turning 60 next month

THanks Dan

1. Differential is used to correct adverse yaw (the down aileron creates more drag, yawing the plane away from the bank) and make more axial rolls.

2. You have basically changed the servo center point. You probably have the same travel up and down from the new centerpoint, unless you're hitting the servo endpoints.

3. To use expo, or how much to use, is a personal preference based on how you like a plane to feel and respond. A lot of people that learned to fly before expo began being used probably got used to the feel of linear response, and don't want to change. Personally, I use expo nearly all the time to differing degrees based on throw, airplane, setup, CG, etc. Just adjust it 'till you feel comfortable with it, wherever that may be. Be carefeul not to put too much expo on a surface, because then you will have nearly no response around neutral so you keep moving the stick until, WHAM, you get a lot of response - maybe too much.

Hope this helps.

Hi Baron Thanks for fast reply. Regarding Expo I'm just trying to make the planes a litttle less twitchy around center..I sometimes over control when flying..
Thanks Dan

Make sure you have the correct sign in front of the expo value. Futaba needs negative (-) expo to make it soft near center, and JR needs positive (+).

50 % is a lot of expo. I use about 20% on AL and EL on sailplanes.