Sylvester "Soo" Boyacheck "restored" this beautiful Henderson 30 odd years ago. He told me it was an uncompleted factory prototype that survived in that state after Schwinn dropped the axe on production. Soo pieced it together into a fine motorcycle. The most interesting aspects of the engine are the use of a timing chain and much larger cam bushings than on previous models. This bike sold a few years ago at the Florida auction for what I thought was a bargain price.
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