Originally Posted by
av8tor1977
Man, I would never retire a good engine for that. It's too easy to machine up a bushing to center the props!! I have even filled wooden prop holes with epoxy and re-center drilled them with great success. The clamping loads hold the prop; all you need do is center them.
Electric props even come with a bushing set, and at start up an electric motor has more violent torque than a comparable engine.
AV8TOR
I have even made rolled paper bushings for props then hardened them with thin CA. They last forever and get the job done quite nicely. Something anyone can do even though they don't have the machine tools to accomplish the task in metal.