Gear Combo Guru
Join Date: May 2007
Bikes: Spec' Tarmac (road), Ridley Fenix (commuter & fast tourer), Salsa Mamasita (MTB), CoMo Speedster (tandem), Surly Big Dummy (cargo), Airnimal (folder)
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Agreed that the chainring swap will be fine. Plus, there may be no need to move the front derailleur. If I understood you correctly, the large ring is going to stay the same (46 teeth), and it is that normally determines the front derailleur position. Try it as it is, and only if the inner cage of the FD contacts the inner chainring when you try to shift to the big ring, then move it up, but if it doesn't then leave it.
Last edited by Chris_W; 03-13-11 at 08:51 AM.