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Recreational Cyclocross and Gravelbiking This has to be the most physically intense sport ever invented. It's high speed bicycle racing on a short off road course or riding the off pavement rides on gravel like :The Dirty Kanza". We also have a dedicated Racing forum for the Cyclocross Hard Core Racers.

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Old 06-10-04, 01:22 PM   #1
Zaphod
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New rear derailleur needed...

I currently have my S-works CX set up with a single front 42 and a rear 12-27 cassette with an ultegra med cage (broken due to locked pulley). I would like to get some more range because I want to keep it single up front, so I want to switch to an XT 11-34 and a single 44 front. My question is should I go with a long cage XTR M952 ($95) or with a long cage XT M750 ($57) or a med cage XT M760 (newest xt model) ($70). These are the options I can currently find to purchase in terms of price/performance. I don't know if the shifting advantage of a med cage outweighs the range advantage of a long cage. Is long cage for cyclocross just a bad idea?
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Old 06-10-04, 05:22 PM   #2
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the problem with a long cage is the shifting is slower and the chain is longer. i'm not sure it's necessarily a bad idea, but i wonder if running that extra length of chain, as well as the looser spring in the rd might make for sloppy shifting in sloppy conditions. i do know that the rage among mountain bike racers in these parts is for a road rd on a road cassette for quicker shifting. my guess is that, with a single 44t chain ring up front, you probably won't need the extra chain length a long cage will give you, even with the wide-range cassette.
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Old 06-10-04, 05:41 PM   #3
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Ive got a similiar set up. a 12-30 and a single 42 chain ring. I run an xt long cage with a single ultegra bar con. In index mode it does not run to well but friction mode works great. I have not been able to figure that one out? But with a 34 on the cassette I think youl need a long cage, anyone else on that???
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Old 06-11-04, 02:49 PM   #4
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I run a 42 front with 11x34 with a xt mid length and a STI shifter...no problems
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Old 06-11-04, 03:08 PM   #5
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Originally Posted by kbabin
I run a 42 front with 11x34 with a xt mid length and a STI shifter...no problems
After all the input, I'm leaning heavy toward that setup. I'm still confused about why shimano would sacrifice strength with the xtr just to shave 50 grams. I can see using a lighter material/same strenght, but I'm a little in doubt that they would reduce durability for that small weight savings. Everyone is screaming XT at me tho, and I really appreciate the opinions.
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Old 06-11-04, 04:01 PM   #6
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Well, I found a real deal at supergo and bought an xt 11-34 for $40 and I couldn't resist the XTR M952 Long cage for $89... And if I want to go with a triple front, I've got that option...
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