RE: LT-40 Wing Inciddence
If you trim for level at half throttle then throttle to full smoothly it should start a climb at about the same airspeed. If it pitches so steeply that it stalls or slows noticably then yes your incidence is too high or not enough down thrust. Set the plane so that the horizontal tail is level then check for down thrust from that level line. It should be between 3-5 deg's. if it is then reducing the incidence more should help. The trim should keep the plane at a constant airspeed no matter what the throttle setting, and start climbing with more power or descending with less power, but it can take some time to settle in if the throttle is moved too rapidly. Remember throttle controls altitude, pitch (trim) controls airspeed.