untrimable planes, maybe servos??
Have been having a problem trimming an couple of my fun fly planes. One of the pattern flyer's in our club said it could be the servos not re centering.
He has an board with an servo tray on one end and an ruler about 10 inch. out on the other. We put 1 of my servos in it. He put an servo arm with an piece of wire on it. We started working the servo to the left and right with the tx. and marked the positions on the ruler. It didn't go to the same spot when move to the left or right and let the stick go back to center. Some of the differences where up to 3/8 of an inch.
And yes I know fun-fly planes aren't suppose to fly straight and level, but would like to be able to trim them, where the surfaces would recenter