Using a road cassette on a MTB

inbred731

I've recently got hold of a road cassette to (according to many riders on sites like these) save weight and improve gear changing.

I've now fitted it and the gear changing is terrible no matter how I adjust it.

Could this be:

1. because I have a MTB rear mech? (SRAM X7 long cage)
2. because I have a MTB chain (SRAM)

Has anyone tried using a road cassette, any hints would be helpful.

Thanks.

nicklouse

Nope just set it up correctly.

it is the same speed. the shifter is sram?

inbred731

it is an SRAM shifter and worked perfectly with my SRAM 11-32 cassette. The new cassette is a Shimano Ultegra 9sp cassette. One thing I notice is that the mech does not move as close to the cassette when moving through the gears (due to the different profiles of the two cassettes). Should this make a difference?

nicklouse

so adjust the big screw at the pivot.

inbred731

I've done that. Still very clunky in operation. Do I need a short cage mech tp cope with the smaller gear range?

nicklouse

have you sorted the chain length?

no you dont have to have a short mech. just set it up correctly.

stu8975

Im running an ultegra cassette (11-23), dura ace chain, xt rear mech (medium cage) and have no probs...did you fit a new chain? if its a worn chain it wont sit correctly on the new sprockets...you should be getting around a 6mm gap from your top jockey wheel and the largest sprocket..unscrew the b-screw until you get this.

http://www.sram.com/_media/pdf/sram/dea ... MY07_E.pdf