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Well I suppose I can let out the secrets of what Graham and I know about the castings and why they were the rejects of the rejects pile. I may well make up a pully to go on the gear side of the crank as that is what would have been used to drive the chip chopper so no real need for a bright finish on the flywheel. You do see quite a few full size with painted flywheels and bright pullies, it's just that some people like a bit of Bling.