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Old 09-05-09, 06:02 AM
zuwapa's Avatar
Join Date: Oct 2008
Location: Nebraska
Posts: 14

Bikes: 1994 Raleigh MT700 John Tomac; 1989 Cannondale SR2000; 1988 Schwinn Premis

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My bike isn't the build from Surly's website.

I found that the large and medium Center-Center measurement is 74mm on a 4 bolt crank. The small C-C measurement is 47mm. How would my BCD be figured?

Last edited by zuwapa; 09-05-09 at 06:19 AM.
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