I think the mechs are a different geometry or cable pull ratio. We were talking about this on today’s ride. I don’t think it works.

I’d love to be proved wrong though! 🙂

Definately doesn’t work with Shimano. Don’t know about SRAM though

I did wonder if it was the cable pull or the leverage ratio of the mech that was different. Wouldn’t be surprised if it was both.

Northwind, any idea exactly why the shimano one won’t work?

Did wonder about the jockey wheels too. Chainrings don’t seem fussy so guessed that jockey wheels would be ok too.

Doh! I’d forgotten about that. Thanks Northwind.

Will stick a 9 speed x0 mech on my 10 speed x9 setup when I get the chance and see what happens.

So is both the amount of cable pulled by the shifter AND the amount the mech moves for a certain pull of cable different on all four of those?

No, its fairly straightforward… If your mech has a pull ratio of 1:1 and your shifter is 0.8:1 it’s not going to work, and personally I want my kit to work properly without having to bodge it. YMMV of course.

Meant to say that my assumption there is that SRAM 9 and 10 speed both use 1:1. I think this is correct.

Tang, do you know if it was SRAM stuff he couldn’t get working? Shimano definitely won’t work.

shimano he tried to bodge. wipperman has been really fine through this winter on 1×10

When I asked a few questions about 9/10 spd compatibility a few months ago, the view then seemed to be that you’re more likely to be able to get SRAM 9spd stuff to work in a 10spd setup than Shimano, but by no means is it guaranteed to work.

The biggest problem you may have though is that 9spd mechs are only designed to work with a maximum rear sprocket of 34T, a 36T rear cog is likely to foul with it. Obviously the 10spd mechs have been designed to work with up to 36T sprocket.

Personally, I’d just buy a 10spd mech and sell your 9 asap in good condition. Save you a few hours of faffing probably, and you know it’ll work!

And as far as chains are concerned, of course you can use any brand on any sprockets, same as you can with 7/8/9 speed. Just make sure you don’t buy a 10spd roadie chain, as the cogs (and the chain) are narrower than on MTBs!

You ridden a bike with 10spd yet? Did you find it at all beneficial?

SRAM 9 and 10spd is not cross compatible, its a pain, if you want 10spd from any either sram or shimano, you have to get a new mech, cassette, shifter and chain. Chain rings are fine, although shimano want you to change over to the dynasys set up of 24/32/42 or double, as its how they designed it all to work.

the difference for the sram mechs, is the lenght of the cable mount (the black plastic bit you run the cable through) not tried swapping the 10spd one on to a 9spd mech.

SRAM has never been 1:1 its just alot closer than shimano 7/8/9spd was. quite day in the work shop we measure it all out.

But it does mean with everyone wanting to go 10spd, bike shops will be making lots of money!

Everyone should just stick with 7spd that was the best! (although 10spd XTR is close)

It also means bargain s/h 9 spd stuff for the less well off off / tight. ; (

Thanks xc4spot, saved me a bit of bother there.

Running 2×10 and still making my mind up on that. The way it’s going i reckon i’ll end up settling on 1×10 with a wide ratio cassette.

somebody needs to make a decent but not extortionately priced 36t 9speed cassette and they’d clean up, with the current 1x? fad