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Wanted: Serviceable A-50-1 crankshaft

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Helping with a project. Looking for an A-50-1 crankshaft. Crank that came with the engine was declared junk (wear and corrosion, pitting).

-1 crankshaft is unique and not compatible with the later model A-50 & A-65 crankshafts.

-1 is single magneto. The back of the crankshaft is hollowed with splines formed on the inside. The magneto mounts directly to the crankshaft via a small spline adapter on the magneto shaft that slides into the splines in the crankshaft. It's not the standard A-series / C-series mag setup.

Appreciate any leads if anyone knows of one. Thank you.

Dave
 

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