Ah, good idea!Looks like there used to be. Not going to restock.
Slick Two Piece Pulley design by Bugpack. Pulley's are held to hub with 6 Allen Bolts, so you can change pulleys without taking it off the crank! Pulley's have either no belt groove, or V-belt in a Power Pulley size which is really popular on the sand!vwparts.aircooled.net
But, why not buy on of these and unbolt the outer part ?
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Actually, don't think this will work. I Hoover's hub is extended to provide enough room between the case and the hub face to mount a stator plate and stator (fixed), with the rotor bolted to the hub face.Ah, good idea!
Too bad the "hub only" is not longer available, but a pulley removable from its hub should be just as good (apart from a few extra $$).
I kind of doubt the price is much less than the $300 each mentioned in his blog back in 2007.Is there a source for this (CNC machine shop or other) at a reasonable cost?
Hotwings, thanks for the input.I kind of doubt the price is much less than the $300 each mentioned in his blog back in 2007.
Keep in mind that RH used what was at hand and could improvise. Pick out the dynamo parts that are easy to source from a system with similar capacity to what is required and start drawing. Parts from a GY6 come to mind.
I'd be tempted to use an aluminum sand seal 'power pulley' as the base for a couple of simple lathe cut parts that bolt to each other to mount the spinning parts.
I bought one from Steve Bennett when he was still alive and running Great Plains Aircraft Supply Company. Later it seemed like they only wanted to sell the complete kit for the flywheel drive. This is Aluminum, and only the left hand threads (to "pump" oil back into the crankcase) and the keyway present any challenge at all to a Hobby Machinist, or a pro.
Pops,Small dia VW pulley and a John Deere alternator. If you machine the flywheel prop hub you could machine a belt grove on the outside.