[Closed] SRAM XO 10spd chain length issue?

Really you shouldn't be using the smallest ring with the smallest sprocket, or large/large. For the reasons you state. You'll find the same ratios elsewhere with different combos. Are you using a long cage mech?

Mechanical sympathy. Learn it.

Convert to 1 x 10 - Neater, simpler, lighter & it's in fashion 😉

Job done.

TOPIC CLOSED

Convert to 1 x 10 - Neater, simpler, lighter & it's in fashion

Job done.

Unless you live near proper hills

* Thread Open *

Never use the 2 smallest together, if it's 3x10 don't use the 2 largest.

Problem Solved

** Thread Closed *

I don't as a rule use small/small or large/large and used it only to check chain length. Either way the chain appears too slack when on small ring and sprocket.
I think it's a long cage mech as it has 3x10 stamped on it.
I live in the Cotswold so not convinced 1 x10 will suit.

On big big I tend to go with mech at full extension then back off a bit (to allow for fixing broken chains etc) the mech then has to deal with the other eventualities.

I don't as a rule use small/small or large/large and used it only to check chain length. Either way the chain appears too slack when on small ring and sprocket.

And this is exactly why you shouldn't use small/small (you shouldn't even need to check the chain length in that position). Simples.

So a chain flailing around and hitting the underside of the frame when in small/small is fine?
And as mentioned before I'm getting chain slip when on the two smallest sprockets.
Surely this points to chain tension?

Yep. That's why we have chainstay protectors. Chain slip could be worn sprockets.

Cassette has had very little use and is virtually brand new.

So a chain flailing around and hitting the underside of the frame when in small/small is fine?
And as mentioned before I'm getting chain slip when on the two smallest sprockets.
Surely this points to chain tension?

Yes and, as everyone has pointed out, and you yourself have acknowledged, don't use small/small! The slipping, if not primarily caused by you using the wrong gears, could be down to different amounts of wear in the chain and cassette, which, assuming you're correct about the cassette not being very worn, should sort itself out in no time.

Here is a pic of what i mean.
[img] [/img]

Too many links.

Thanks sunnrider,that's what I was starting to think. Trouble is if I remove 1 link the chain will be too short as per SRAM's instructions for determining chain length i.e thread chain around large chainring and large sprocket and add 2 links.

One other question. Isthere meant to be a spring built in to the bolt that attaches the rear derailleur to the hanger?
Just checked my old xt derailleur and that has a built in spring
Thanks

[i]So a chain flailing around and hitting the underside of the frame when in small/small is fine?[/i]

Don't use small/small then.

To really check the chain, take it off and then put it large/large but not through the mechs. Add one link and it'll be right.

It sounds like you think the chain is too long albeit that it fits when you follow the SRAM manual

If you think it's too short then take a link out and try it on the big/big combination

If its fine there then great. If its too short then put the link back in and don't use small small

Don't forget to check what it's like when your suspension (if any) is compressed

Btw my sram x9 looks similar when in small small

I know the method says not to check with it through the mech but thats how its used. How much spare do you have when large to large mech included. Drop the shock out to check for growth then thats your answer. Shorten as much as you can.