I felt pulsar's method of an aileron trim system was not a lasting design. It had springs that were attached to the ailerion push-pull rods. In my years of being an A&P mechainc i have found that springs are not a good idea for aircraft. The springs end up streching over a few years. My design has a trim tab built in to the aileron on the left side. there is a built in Ray Allen servo. make sure if you elect to do some thing like this that you understand how the flight controls need to be balanced!
