Can I run a 10 speed xtr mech with 9 speed xtr shifters?

[ishaw]

Possibly a simple question but I've an m985 rear clutch mech kicking about and a 9 speed m970 shifter. I'm hoping I can get away with running them on my yet to arrive folding bike. I'm thinking it will be ok but want to be sure.

Will a 9 speed chain be ok or will I need a 10?

What is the benefit of the clutch? As my folder is going to start life with a single front ring, I was thinking it might be useful to prevent the chain dropping, is that the purpose? Excuse my ignorance, catching up on modern tech at the moment.

Thanks

 

[legrandefromage]

You can

you cant

you can

I dont know!


10spd shimano might actually work but it all went 1:1 cable pull instead of the old 1:2

 

[kenaltobelli]

Re:

tried a deore 9sp shifter and xt 10 speed mech would not work on the moonlander
for me;;but then i am useless on bikes :facepalm:

 

[GWDesigns]

Re:

No you can't. The clutch mech is explained here. [youtube]https://www.youtube.com/watch?v=uAsk46xcGUE[/youtube]

 

[ishaw]

darn it. Looks like back to the drawing board.

 

[02gf74]

Shimano 10 speed have different amount of cable pull so wont work witb 9 speed shifter. I may be wrong but i think the pull is same as on sram 9 spd.... someone will correct me.

BTW the faq on bikeradar covers the different sp compatability issues.

Re chains. I run +1 speed chains without problems. I.e. 10 sp chain on 9 sp cassette and chainset.

Not tried -1 speed but it should work, the difference is about 0.5 mm ( just so happened i replaved 9 spd chain and wasnt sure if the chain in the bag marked 8 sp was 8 sp, oh and i didnt fit it but had spare 9 sp that i used)

 

[ishaw]

Ok I just thought that the shifter controlled the amount of cable pulled and the mech was just a passenger. If it's 1:1 would sram 9 speed shifters work with the 10 speed mech?

 

[02gf74]

Yes but mech moves a certain distance depending on amount of cable pulled so the two need to match.

Before i googled the question, i would bave said sram 9 sp would work with shimano 10 spd, it seems that a 6 mm spacer for the cable clamp is required to match them (spacer compensates for the cable pull difference)

 

[GSB]

I tried it.

It doesn't work...

 

[ishaw]

Looks like I'm not quite going back to the drawing board as I forgot I bought a 10 speed xt shifter a while back. Normally I don't like to mix and match and I could do xt shifter and rear mech but I've an xtr mech doing nothing g so think I'll have to overcome that ocd.