Bicycle Mechanics - Chainring question

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brundle_fly
09-08-06, 09:45 AM
Anyother question from a wanna be mechanic.

Say if have a 53/39t chainrings on my crank.Will I have to get the exact one to fit from the same manufacturer or can they interchange.i.e can FSA 53/39 can be replaced by a Shimano 53/39,or are the cranks configured differently


Philatio
09-08-06, 09:54 AM
http://www.sheldonbrown.com/gloss_bo-z.html#bcd

brundle_fly
09-08-06, 10:14 AM
Thanks for that.That's cleared it all up.

Any idea on what sort of mileage the rings should be replaced?