Thread: Changing Chainrings
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Old 04-28-13 | 08:58 AM
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HillRider
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Joined: Aug 2005
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From: Pittsburgh, PA

Bikes: '96 Litespeed Catalyst, '05 Litespeed Firenze, '06 Litespeed Tuscany, '20 Surly Midnight Special, All are 3x10. It is hilly around here!

If you have a standard Campy Record crank with 53T/39T chainrings, the bolt circle diameter is 135 mm and 39T is the smallest chainring it will accept. To get compact gearing (normally 50T/34T) you will have to replace the entire crank with one that has a 110 mm BCD. Campy does offer them.
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