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Triple, or double w/MTN Rear Der & Cassette?(3 posts)

Triple, or double w/MTN Rear Der & Cassette?nova
Aug 3, 2001 9:51 AM
I'm putting together a 'cross' bike for dirt roads, fire roads, pavement, commuting, and light touring.

Are the XT and LX rear derailleurs STI compatible? Will an Ultegra or DuraAce chain work with these derailleurs and a mountain cassette?

Would you recommend this setup (if it is feasible), or should I go with a straight 105 or Ultegra Triple setup? Any thoughts as to how the Campy Racing Triple would hold up on such a bike?
re: Triple, or double w/MTN Rear Der & Cassette?dug
Aug 3, 2001 10:37 AM
Compatible: yes
Ultegra/DuraAce chain: yes, they will work just fine
setup: certainly its feasible. Alot of 'cross bikes are set up for top pull front derailleurs (i.e. Mountain bike, road bikes are bottom pull) Campy racing triple would work just fine, but your violating a principal universal law of cycling: thou shall not intermix campy and shimano.
re: Triple, or double w/MTN Rear Der & Cassette?Chen2
Aug 3, 2001 3:09 PM
I put an XTR 12-34 and XTR rear der on my wife's road bike and it shifts perfectly with the Ultegra crank set. Of course you'll need a 9-speed chain with a nine speed cassette and the der has to be long enough to wrap all that chain. The Campy Racing Triple might be the best set-up because you can get 50-40-30 chain rings and running those with a road cassette will result in closer ratios. Those Shimano mtn. bike cassettes have a 2 tooth or more jumb between each cog which results in a very wide ratio set-up and probably some unneeded ratios. But if you go Campy, go Campy all the way, and you may have to build a custom rear wheel with a Campy rear hub. And, of course, that's going to cost a lot more $$ than just slapping on the Shimano mtn. rear-end.