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shimano xt 10 speed compatability
would i be right in assuming if i bought a 10 speed xt cassette and rear mech it would work with my 10 speed ultegra shifters and compact chainset.if so using a 50 34 compact would i need the long or medium cage mech?i saw on dave's blog that nick craig used the xx groupset but this seems a much more affordable option.Ta
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Replies to This Discussion
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Permalink Reply by Dave Haygarth on -
Jury's out - will let u know. I'm testing this soon. A couy[le of retailers say 'no' but we'll have a test and see... watch this space (or someone update us!)
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Permalink Reply by Lee Shunburne on -
Isn't there a different cable pull ratio for the 10spd MTB mechs? I presume this is why people are saying 'no', but if that's the case then a 9spd MTB mech should work as the ratio is the same as 10spd road levers.
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Permalink Reply by ben warburton on -
i will post it on the singletrack forum and see what they come up with
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Permalink Reply by ben warburton on
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sram apex which is a road groupset i have never heard of do a 11/32 cassette and mech which is shimano compatabile.which with a 34 upfront is not far off 1 to 1. what do you reckon Dave your the expert.
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Permalink Reply by ben warburton on
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apex is not available in uk yet apparently.you tried the xt cassette and mech yet Dave?
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Permalink Reply by Paul Masson on -
I am using SRAM Force shifters with an Apex rear mech and 11-32 cassette, up front is a Force compact 50/34 all working fine.
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Permalink Reply by Alan Cook on
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The new XT mech uses a different cable pull than the road 10 speed set up, so you can't use a 10 speed XT mech with 10 speed Dura Ace /Ultegra /105 sti levers and enjoy pefect indexing.
The spacing of the cassette is identical to the road versions.
I have been using the 11-34 XT cassette (and before that an IRD one) with a long arm 105 rear mech successfully, so far.
There are two issues - chain slack and sprocket size.
The long arm 105 rear mech copes with the additional chain length without any problem.
However the sprocket size is a more contentious issue. Shimano mountain bike derailleurs come in different versions, linked to capacity.
Releasing my inner anorak... the body of the mechs are successively longer as capacity increases, along with the length of the arm to take up the chain slack.
This places the upper jockey wheel further from the cassette and enables it to clear the sprocket.
The road rear mechs, irrespective of length of arm, have the same body length, meaning the same clearance between jockey wheel and sprocket.
So what?
Whilst the set up I have works (11-34 cassette, 105 f&r mech and ultegra sti, 50-34 chainrings), the possibility/ probability exists to rip off the rear mech as the jockey wheel catches on the sprocket...
Just needs to last for 28kms on the road and 33kms off road!
Very tricky to explain without waving my hands around or using loads of photos
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Permalink Reply by Lee Shunburne on
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So why not just use a mega-9 MTB mech? Problem solved!
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Permalink Reply by Dave Haygarth on
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Any Shimano 9 speed MTB mech will to the job of clearing the large sprocket and has the same pull ratio as Shimano road 10 spd
Alan Cook said:The new XT mech uses a different cable pull than the road 10 speed set up, so you can't use a 10 speed XT mech with 10 speed Dura Ace /Ultegra /105 sti levers and enjoy pefect indexing. The spacing of the cassette is identical to the road versions.
I have been using the 11-34 XT cassette (and before that an IRD one) with a long arm 105 rear mech successfully, so far.
There are two issues - chain slack and sprocket size.
The long arm 105 rear mech copes with the additional chain length without any problem.
However the sprocket size is a more contentious issue. Shimano mountain bike derailleurs come in different versions, linked to capacity.
Releasing my inner anorak... the body of the mechs are successively longer as capacity increases, along with the length of the arm to take up the chain slack.
This places the upper jockey wheel further from the cassette and enables it to clear the sprocket.
The road rear mechs, irrespective of length of arm, have the same body length, meaning the same clearance between jockey wheel and sprocket.
So what?
Whilst the set up I have works (11-34 cassette, 105 f&r mech and ultegra sti, 50-34 chainrings), the possibility/ probability exists to rip off the rear mech as the jockey wheel catches on the sprocket...
Just needs to last for 28kms on the road and 33kms off road!
Very tricky to explain without waving my hands around or using loads of photos
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Permalink Reply by Alan Cook on
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Spot-on Dave- thanks
Mega9 rear mech "borrowed" off my tandem indexes perfectly!
In summary, mega 9 xt rear mech, xt 11-34 ten speed cassette and Ultegra ten sti work faultlessly
Dave Haygarth said:Any Shimano 9 speed MTB mech will to the job of clearing the large sprocket and has the same pull ratio as Shimano road 10 spd
Alan Cook said:The new XT mech uses a different cable pull than the road 10 speed set up, so you can't use a 10 speed XT mech with 10 speed Dura Ace /Ultegra /105 sti levers and enjoy pefect indexing. The spacing of the cassette is identical to the road versions.
I have been using the 11-34 XT cassette (and before that an IRD one) with a long arm 105 rear mech successfully, so far.
There are two issues - chain slack and sprocket size.
The long arm 105 rear mech copes with the additional chain length without any problem.
However the sprocket size is a more contentious issue. Shimano mountain bike derailleurs come in different versions, linked to capacity.
Releasing my inner anorak... the body of the mechs are successively longer as capacity increases, along with the length of the arm to take up the chain slack.
This places the upper jockey wheel further from the cassette and enables it to clear the sprocket.
The road rear mechs, irrespective of length of arm, have the same body length, meaning the same clearance between jockey wheel and sprocket.
So what?
Whilst the set up I have works (11-34 cassette, 105 f&r mech and ultegra sti, 50-34 chainrings), the possibility/ probability exists to rip off the rear mech as the jockey wheel catches on the sprocket...
Just needs to last for 28kms on the road and 33kms off road!
Very tricky to explain without waving my hands around or using loads of photos
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Permalink Reply by Lee Shunburne on
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Hmm, I think I said that'd work back in July! :-)
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