short cage rear mech

[spudgun]

Will this work on a 27 speed set up?

 

[FluffyChicken]

It all depends on the cassette sprocket sizes and the front chainring sizes.

Nothing to do with number of them.

By 'short' do you mean short or medium ?

Would have been much easier if you mentioned the model and make as someone would be able to tell you the capacity. :roll:

 

[spudgun]

It's a short cage xt mech,with 24,34,42 teeth up front

 

[FluffyChicken]

That would be "medium" cage then (SG) but MTBers tend to call it short. Just checking as they do make SS short cages.
Just looks like a normal setup so other than possibly having slack chain on small-small and maybe medium-small... that all depends on the rear gog span,
But I run a M900 XTR medium (short) cage with 11-28 to 24-48 and just cannot use the small front / couple of small at the back cogs as I have slack chain.

I setup my chain so I can run large large without the chain snapping or getting locked in that position.


but to check you should find you model of XT mech (there any many different ranges :roll: ) though I doubt it's changed in capacity.
Find it's spec and work it out

 

[spudgun]

Thanks for your help,rear cassette is a11-32,so presumably the chain will be very slack in small small combo.

 

[Xesh]

If it's an SS cage model you won't be able to use it with anything bigger than 30T on the cassette (Shimano quoted a max of 28T but I've used them with 30T before). I did try one on a 11/32 9 speed but couldn't get it to clear the large sprocket (the top jockey wheel rubbed on it).

If it's an SG (a modern medium cage) on the other hand you'll have no problems using it.

 

[spudgun]

model number is rd m750

 

[Xesh]

Then it's an SG type. No problem with that.

 

[spudgun]

Thank you very much