Here is something Power Sport came up with.
     Sorry about the out of focus pic. Don Dunbar is using a rubber coupling that looks
     real interesting. I would wait and see how it idles however :) Might be a bit
     too stiff. One can always drill holes in the rubber to soften it up a bit.
     Freeze it first.

Paul, Powersport doesn't use a coupling. The flywheel they use also replaces 
the end weight. They get back some weight that way.
The system uses an ultra stiff end of the spectrum system with pinion 
bolted directly to the taper. I like the rubber coupling
you show here though. The large bushings and flex plate do the same 
thing really. Bill Jepson

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