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Old 04-26-2015, 09:31 AM
  #40  
Bozarth
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Originally Posted by drac1
No need for expo? Interesting.

Expo isn't used to make the control surface directly proportional to stick movement. It's just the opposite. Expo is used to move the control surface less than stick movement around center to make it less sensitive, which makes flying smoother.
I have my elevator throws set for 20% of full throw when flying pattern and I still use 40% expo. The other surfaces also have similar set ups in relation to full throw. Full throws are used for landing and take off and have higher expo percentages.
You misunderstood what I wrote...I was responding to an earlier post where someone stated that one needs to add a certain amount of expo to try to bring the control surface response to something near linear. His logic was based on the sin function motion of the servo in the x-axis. I was pointing out that this opposite relationship occurs at the control surface also, thus no need for expo to make the response linear...it already is!

Kurt