Originally Posted by
Not the Slowest
Actually I believe with a long cage RD (triple) you CAN use a 14-34 or similar. The problem is the double rd usually will not go past 28.
You are wrong (and so is canopus).
Cage length has
nothing to do with the size cog a RD will handle. Cog capacity is constrained by the parallelogram geometry; the cage constrains only chain wrap capacity. Shimano road RDs - of any cage length - are spec'd to handle up to 27T, but will generally handle up to 30T.
Any RD will handle 7-speed 11-23. So what's wrong with your Exage?
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Last edited by DMF; 12-18-09 at 12:17 PM.
Reason: speling