R
Rick Johnson
Dumb question, probably, but I recently replaced the entire drive train on my '87 H31: new cutlass bearing, shaft log, shaft, PYI dripless shaft seal, etc. Sailing in SFO I have plenty of wind most of the time, so I elected to change to a 3 bladed prop, and I didn't really care about the extra drag.The new prop works great, and engine vibration etc. is minimal when motoring, and the whole drive train rotates easily following the alighment, but I find that when under sail, with the engine shut off, the propeller windmills, creating a perceptible vibration, and since this didn't happen with the 2 bladed prop, it surprised me a bit, and I was wondering if this is a problem, and if so what to do about it.