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Ramped and pinned?(2 posts)

Ramped and pinned?Live Steam
Mar 7, 2003 1:05 PM
Well I know what the ramps are on a chainring and what their purpose is, but what are the pins for? They occur at irregular points arount the inside edge of the large chainring.
grab the chain to help shifting nmDougSloan
Mar 7, 2003 1:43 PM