trs drives
 

Does anyone know how high you can raise a trs drive at speed before it destroys the u-joint or damage the drive ?
the trim limit switches do not work anymore

usually the prop will blow out before you raise it too high while running...........unless you're talking about raising it while at idle or something....then you have to either have some drive indicators or just "know" or have a feel for it as to how high they can go before binding the u-joint. It will start to vibrate bad if you get to extreme with the angle too....