"JimBob" <[email protected]
> wrote in message
> Would Shimano LX CS-HG70-9 (11-32) be a direct replacement for CS-HG70-9 (12-25) in terms of
I was looking into cassette hubs recently. If your hub body is of a recent type, called Hyperglide
C, then you can replace the cassette directly. If it isn't, you need to put a thin spacer on the hub
to allow the 11 tooth sprocket to clear the end of the splines.
explains the different types of hub bodies.
Other people have mentioned your derailleur. I didn't see you mention what type you have, but the
cage length doesn't determine the largest sprocket you can use. Mountain bike derailleurs have more
slope in the parallelogram than road bike derailleurs, allowing the cage to clear a larger sprocket.
The length of the cage determines the amount of chain slack the derailleur can take up. You will
probably need to use a mountain bike derailleur with a 32 tooth sprocket, and you must make sure
your chain is long enough.