Originally Posted by
Duragrouch
THANK YOU!!
Why in the HECK would they drive the rear sprocket like that, instead of the inner ladder chain driving it at the same diameter? There's gotta be a reason. Gonna search online. EDIT: Well that was easy:
https://en.wikipedia.org/wiki/Simpson_chain
Ha! That link was worth reading.
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Keeping Seattle’s bike shops in business since 1978