Aymar DeMuth Prop Torque
 

What is the prop torque on a Aymar DeMuth prop for a RV-4, O-320, 150HP. Is 100 hrs and or once per year ok, or should it be every 50 hrs? Thanks for your help. Scott

My Aymar Demuth came with instructions to torque it to 18 ft-lbs. I re-torque it about every 25 hours and/or before I go on any long trips where I won't have easy access to the appropriate tools.

I have never found the bolts loose or experienced any fretting, but I'd rather re-torque it frequently than have a bad experience down the road some day...

I agree with Kyle completely. I do the same routine.

Deal Fair
George West, TX
RV-4 Flying (N34CB)

Thanks for your help!