ORIGINAL: checkmate91
So nothing then in the suggestion that having the prop at 90 degrees to TDC helps counteract the natural imbalance of a single piston engine?
I've always positioned props at 3/9 when the piston is at 12 (so to speak) irrespective of how the engine is positioned in the plane. have to admit that I've gone through quite a few props over the years but still got all my original engines...
Andy
Since a prop should be balanced, placing it should not do anything to counteract any balance or imbalance.
BTW, checking the balance of all your props is worthwhile if you'd like to keep not just your "original engines", but all your radio equipment and the airplanes they control for you. The props don't have to be absolutely perfectly balanced, but you do need to correct one every so often.