Had my 2010 Stumpjumper fsr frame (alu) replaced with the carbon one under warranty and have had quite a lot of chainsuck issues with it from the start.
I'd swapped out the original chainset on the alu one for my XT one and it was running fine. It's a fair age, but to me the 'rings don't look too worn. I had no issues with chainsuck on the alu frame with this chainset.
The frame was swapped for the carbon one and at the D2D in very muddy conditions I had stupid amounts of chainsuck that has made a real mess of the chainstay.
I put it down to the awful conditions and haven't really had the issue since (only once going up that steep concrete slope at Cwm Carn).....
I replaced the chain a few weeks ago as the old one was shot. Shifting with the new chain is fine.
I went to Chicksands last week and up the steep bits of the XC loop I was getting really bad chainsuck again.
It only seems to happen in the granny ring and you can hear it when it's going to happen.
I have bought a new 22t chainring to fit this evening, but should there be anything else I look for??
The frame has push-fit bearings and as far as I can tell I can't alter the chainline (with spacers, like HTII), as a result. I wonder whether the XT chainset is compatible with this style BB assembly?? I assume it is.
If I still get it with the new 'ring then it'll be back to the shop to probe their collective mind.
I intend to botch together some kind of inner tube/zip tie guard this evening as the chainstay is looking like it's been given a right mauling....
