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I have a complete Xt double drivechain i want to sue for a touring bike, are there any shimano STI's that will work with it, its an older model xt probably about 8 years old, m785 from memory
IIRC shimano road & mtb are compatible in 7,8,9 speed, but INcompatible in 10,11,12 speed, due to different cable pull.
im wondering if the mechs would work with 9 speed Sti's then and a new 9speed cassette and chain would be all i need.
My Creo SL came with an 11 speed XT Di2 rear mech and Ultegra Di2 STIs
A 9 speed MTB rear mech will work with a 9 or 10 speed STi
i've got a 9 speed SLX mech and cassette running with 10speed ultegra/105
What you cant do is run 10 speed MTB/Clutch mechs with 10 speed road
Yep, I have 10 speed Tiagra STIs with 9sp XT rear mech on my Zwift bike, all good.
Double check the exact pull of any STIs you're thinking of getting, certain levers (10 sp Ultegra? 1 model of Tiagra?) have different cable pull.
My tourer is 3x10 with 105 5703 shifters and fromt mech, the rear mech is the last 9s XT Shadow version. You should be good to go with most 2x10 shifters, 9 speed rear mech. Front mech, run what you've got, and if it's not happy, get the one that matches your shifters rather than the chainset.
its odd and weird... but a ten speed sti drop bar roadie shifter works fine on a 9 speed XT rear mech. I had this set up on a Salsa Ti Fargo eventually, after much swearing.
older non shadow and non clutch mechs work with drop bar levers. you cam also use 10 or 11sp mtb clutch mechs with roadie shifters using a wolftooth tanpan converter that fits on the rear mech and corrects the cable pull ratio
Warning the 10 speed sti 9 speed mech thing won't work with current Tiagra (5700 I think). But a current Tiagra derailleur will work on an 11 36 block
im wondering if the mechs would work with 9 speed Sti’s then and a new 9speed cassette and chain would be all i need.
I don't think that'll work.
Shimano Road 9 / Road 10 / MTB 9 will mix and match. MTB 10 won't.
My Creo SL came with an 11 speed XT Di2 rear mech and Ultegra Di2 STIs
A perfect STW reply. Factually correct but in no way useful to the OP.
This might be the answer wolftooth tanpan
It's cute, but £44? Just buy the right mech!
I'd be surprised if you get any front mech to work. The MTB ones don't pull/work, but the road ones aren't they right shape for smaller rings. Rubbish shifting/trimming. I seem to remember something about SRAM front mechs working with Shimano STIs??
My front shifter is Tiagra road and works fine on 38 26 chainset. Road chain line
Tiagra do a triple front mech that is designed to work on 30 40 50. It has to reach further than a double shifter. I'd be willing to take a punt on that being ok on an MTB double
I have a couple of bikes set up with 10speed 105 STIs and mtb gearing...using 9 speed Xt or Xtr mechs and Xt front mechs...my rule of thumb is use front mech that matches the chainset
A problem is that Tiagra is the obvious candidate but is the real wild card exception in Shimano's line up with an odd cable pull...bit annoying...and getting decent 9speed mechs is getting hard
I’d be surprised if you get any front mech to work. The MTB ones don’t pull/work, but the road ones aren’t they right shape for smaller rings. Rubbish shifting/trimming.
This. I moved from drop bar triple and I needed chainset, mech, shifter to ask play nicely/be the same model to get things to work.
My Paul hewitt tourer came with 9 speed xt set up but campag veloce 9 speed shifters
I've got a Sora brifter pulling a nine speed chain back and forwards on a 40/28 XT 10 speed chain set via an old nine speed triple front mech. Works fine but I appreciate that's not quite the same thing.
I'd expect a LH friction/micro-indexed bar end shifter to be able to work pretty much any double chainset and front mech combination with a bit of tinkering.
im wondering if the mechs would work with 9 speed Sti’s then and a new 9speed cassette and chain would be all i need.
Yep.
I’ve got a drop bar bike with 9x2 tiagra sti (4500) attached to 9 speed deore front and rear mechs. Front mech is a triple so adjusted the limit screw so that it only shifts between middle and big rings on an old mtb triple crankset (32,44) cassette is 11-36. Works really well and has all the gears I need for that type of riding.
Am now considering swapping the cassette and rear mech on the road bike which has 4600 tiagra 2x10 with 105 mech to mtb 11-36 cassette and mech too for the extra range. Rear mech doesn’t really matter as long as it has the capacity for the cassette I think.
Yep.
I’ve got a drop bar bike with 9×2 tiagra sti (4500) attached to 9 speed deore front and rear mechs.
... Did everybody just ignore that the OP said they were on 10 speed XT?
Nope that’s why I quoted and replied to his second post in the thread...
To answer that specific question.
Mechs don’t care how many clicks the shifters have, as long as they are suitable for the cassette or chainrings.
Mechs don’t care how many clicks the shifters have, as long as they are suitable for the cassette or chainrings.
No, they don't - but they have a different leverage ratio.
i.e. for 1mm of cable pull from the shifter, a 9 speed mech and a 10 speed mech will move the cage by a different amount.
Ok I’ve thought this through a bit more.
Shimano changed the cable pull when they brought out 10 speed mtb. I remember bodging 10 speed mechs with spacers in order to get a clutch for 1x9. So although my 9 speed mtb mech will work with 9 or 10 speed road shifters (except later tiagra 4700), 10 speed mtb mechs won’t. 🤔