Aymar DeMuth Prop Torque

[Rearsteer]

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

[Kyle Boatright]

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...

[dealfair]

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

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

[Rearsteer]

Thanks for your help!