ORIGINAL: OzMo
ORIGINAL: bruce88123
There could be a lot of reasons why this is happening. One could be the "neutral" or "center" position of the arm on the servo. Another could be not having the horn positioned correctly in relation to the hinge line of the aileron. For most high wing/sport plane a little "differential" is nice in the ailerons BUT in the other direction. This is because it helps prevent adverse yaw during turns. This is also used in full scale planes.
Desirable = more up than down.
Can you post a pic of your servo installation and linkages?
on a flat bottom wing(trainer) the aileron going down causes more lift and rolls the plane. ie. down right aileron is rolling your plane left.
If the mechanical setup on a single servo arrangement allows less up on the opposite wing it decreses drag and causes less adverse yaw
so desireable= more down than up if i'm not mistaken.
Sorry, you have it backwards it part. The aileron that goes down DOES lift the wing but it also creates MORE drag than the the other aileron does when it goes up. THIS is what causes ADVERSE yaw.