scottmillhouse
Well Known Member
Just finished first round of spinner cutouts for my new Hartzell aluminum CS prop on new IO-360. Combo just received from Vans. The last RV I built with CS I just did the best I could and once flying kept removing more fiberglass until no contact at full pitch. This time with a new engine preserved I don't want to rotate the engine any but I do want to rotate the prop blades to insure clearance. Would it work to rig up compressed air to the engine port to twist the prop and if so how many psi to fully rotate the prop? I plan to finish paint all before first flight so I want to insure proper clearance now before I move forward on cowl fitting.