10 speed chain on a 9 speed train - will it work? - Bike Forum

Re: 10 speed chain on a 9 speed train - will it work?

gwaelod — Fri, 07 Jun 2013 17:57:39 +0000

Arse

But Thanks lads

Re: 10 speed chain on a 9 speed train - will it work?

qtip — Fri, 07 Jun 2013 13:41:21 +0000

I'm trying to figure out if I'll die if I install a 10sp XT mech on an old 8sp XT setup, the gradual intention being to slowly migrate it to a full 10sp set up as bits finally give up the ghost.

You might not die but your gears won't work. Crankrider is right, the pull ratio is different.

Re: 10 speed chain on a 9 speed train - will it work?

crankrider — Fri, 07 Jun 2013 13:29:44 +0000

That way you don't risk the 10sp chain keying it self to the 9 speed transmission and not working when you go fully 10sp

That cant / wont happen.

Right:
8&9 Spd chains = Exactly the same
10 spd Chain = narrower EXTERNALLY because they had to decrease the spacing between teeth on the cassette to fit the extra gear on. - Use the 10spd chain with 8, 9 or 10 spd.

10 spd mech however = different story maybe - different cable pull ratios?
11spd chain = 0.1mm smaller internally, not sure externally. 11spd only if you are being correct.

10 spd derailleur on 8 spd setup may not work due to cable pull ratios.

Re: 10 speed chain on a 9 speed train - will it work?

jairaj — Fri, 07 Jun 2013 13:22:51 +0000

The only reason not to do it is if you're likely to wear that chain out in a couple of months

Sorry crap wording. That's what I meant by "keying".

Re: 10 speed chain on a 9 speed train - will it work?

njee20 — Fri, 07 Jun 2013 12:29:55 +0000

That way you don't risk the 10sp chain keying it self to the 9 speed transmission and not working when you go fully 10sp

That makes no sense, the spacing of the teeth doesn't change. The only reason not to do it is if you're likely to wear that chain out in a couple of months, they are totally compatible.

Re: 10 speed chain on a 9 speed train - will it work?

gwaelod — Fri, 07 Jun 2013 12:27:11 +0000

is there a some sort of 8/9/10 speed compatability flowchart somewhere online - it would save everyone a lot of bother -

I'm trying to figure out if I'll die if I install a 10sp XT mech on an old 8sp XT setup, the gradual intention being to slowly migrate it to a full 10sp set up as bits finally give up the ghost.

Re: 10 speed chain on a 9 speed train - will it work?

Scapegoat — Fri, 07 Jun 2013 12:21:09 +0000

Patriotpro email me. I've got a just under .75% worn SRAM you can have for postage and karma

Re: 10 speed chain on a 9 speed train - will it work?

Dales_rider — Fri, 07 Jun 2013 12:04:52 +0000

I run a 10 speed chain (KMC) on a 9 speed chainset, works perfectly

Re: 10 speed chain on a 9 speed train - will it work?

br — Fri, 07 Jun 2013 11:46:03 +0000

b r - it's because i've had the whole drivetrain since new and it's all really tired. I'm gonna go 2 x 10 but can't afford to do it in one wild swoop. If I bought a 9-speed chain, I would only be buying again in the next couple of months when I mustered the fundage to get the rest of the drivetrain.

Mate

£10.

http://www.chainreactioncycles.com/Models.aspx?ModelID=9911

And ride more, and wear it out :-)

Plus if its really 'tired', a new chain probably won't work too well.

Re: 10 speed chain on a 9 speed train - will it work?

crankrider — Fri, 07 Jun 2013 11:11:46 +0000

Kind of. Obviously the 10 speed chain is narrower. I tried it and it wouldn't "sit down" in the chainring properly. Less than 0.5mm. But it did skip when under a lot of pressure.
YMMV.

As above - something doesnt sound quite right there.

I would guess that even the 11 spd chain would physically work with a 9-10spd drivetrain, its only 0.1mm thinner, or 0.05mm each side of the chainring tooth - naff all.