The Improbable Bulk
Join Date: Jul 2005
Location: Wilkes-Barre, PA
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Is there a typo in your subject line, or are you really suggesting that you want two chain rings the same size?
Edit: Your edit makes a lot more sense.
And from my knowledge, it should be no problem but a couple of potential small steps aside from replacing rings.
Replace rings, add links to chain (if needed), raise/adjust front derailleur.
The need to add links to the chain should be checked the same way as it is checked for installing a new chain. Adjusting the front derailleur is also a standard procedure.
See the usual sites for that info, ParkTool.com, SheldonBrown.com, etc.
Last edited by Little Darwin; 05-13-09 at 01:14 PM.