A new shift concept for the engineers....
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02-25-2011, 01:58 PM
Motorized Bicycle Elite Member
Join Date: May 2009
Location: acme labs marion ohio
Re: A new shift concept for the engineers....
if you use the BB as a jackshaft you will still need 2 chains. might as well just use 3 chains and the sbp tech already there. the whole idea is to just have one chain.
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