JackinMichigan
Well Known Member
I have an entirely Garmin control panel in my RV-10 and one of the features is an autopilot (roll and elevator, no rudder). The roll control works great, but when I engage altitude hold the plane will begin 'porpoising', and it will get exponentially worse till, after three up-down cycles, I have to disengage the autopilot. I've reduced the sensitivity, reaction speeds and reaction forces of the elevator servo but nothing seems to help.
One thing I've noticed is when I'm adjusting elevator trim, the trim indicator lags way behind the actual trim motion. Not sure why that is, but the entire electric trim assembly is buried deep in the tail with no good way to get to it. I suspect this has a lot to do with it.
One thing I've noticed is when I'm adjusting elevator trim, the trim indicator lags way behind the actual trim motion. Not sure why that is, but the entire electric trim assembly is buried deep in the tail with no good way to get to it. I suspect this has a lot to do with it.