Shaft driven bikes are actually quite old. I have seen pictures of them from the early 1900s and here is a 1949 Elgin Robin that recently sold at auction for $20,900. There is one of these at the Grand Haven Bicycle Museum not far from me, all I can say is that I really love Elgins...Kelly

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I'm racin' Spitfire, turnin', poppin' wheelies, burnin' evil chasin' pop,pop, pop,pop,pop.... (The Pixies-Tony's theme)