I had been experiencing chain suck in the granny ring with the following setup >
Race Face Evolve Chainset (22T granny)
Shimano XT chain
Shimano XT cassette
shimano XT M750 rear mech long cage (older style)
After about 1 year of riding this setup I started getting chain suck regularly - cranks completely jamming up and nearly throwing me off on a regular basis. I checked for bent or worn teeth and chain growth but hardly anything worth talking about. anyway I assumed it must be this so I replaced the chainset and chain to Shimano XT double and bash (22,36). the cassette is fine so didn't replace.
On the first ride out - More chainsuck - what is going on??????????
I have a Norco Six which now has exactly the same setup except for a slightly newer style XT M770 rear mech (medium cage) and have never experienced chain suck.
Are my cranks mis-aligned?? - I have 2 drive side spacers and 1 non drive side spacer on the hope BB for a 68mm BB shell.
Please help - I am at a loss