Originally Posted by
ofajen
I’m curious. What is the large, toothed disc that appears to be on the non-drive side of the rear hub?
Otto
That would have been DIY motor related, I believe?
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A race bike in any era is a highly personal choice that at its "best" balances the requirements of fit, weight, handling, durability and cost tempered by the willingness to toss it and oneself down the pavement at considerable speed. ~Bandera