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Old 04-12-09, 08:54 PM
aka mattio
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What kind of crank do you have? Different cranks have different "bolt circle diameters," also known as BCD - if you draw a circle around all of the chainring bolts (that attack the chainring to the crank), the diameter of that circle. Campag cranks use 135 bcd, most other road cranks use 130 bcd, old road cranks and current track cranks use 144, compact cranks use 110. Anyway, your local bike shop can get you a chainring, or any one of numerous on line retailers.
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