I would recommend that you do a little research on chain wrap. Not all long cage dérailleurs have the same capacity. And it's not simply a function of the largest cog on the cassette. You also need to take into account the chain rings.
Here is an explanation with some Campy info, but the same concept holds true for all dérailleurs.
http://branfordbike.com/articles/rea...leurs-pg62.htm
Last edited by SadieKate; 01-12-2010 at 02:02 PM.
Frends know gud humors when dey is hear it. ~ Da Crockydiles of ZZE.