Seems to me that all of the ?solutions? just transfers the problem away from the crankshaft, dosen?t make it go away. Whatever the propeller is connected to just has to be strong enough to never break. So the ultimate solution seems to be a stronger crankshaft to withstand the propeller vibrations. Can the Corvair crankcase bearing be bored out for a bigger journal? And can the crankshaft be modified to a larger journal? I know they can rebuild them by building up the journal with an electric welder and regrinding it.
