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Replacing outer ring, will XT ring fit my FC-M442 Cranskset?

pealypealy Posts: 107
edited November 2010 in MTB workshop & tech
As title, the outer ring on my crankset appears to be made from plasticine so I need to replace it. I was thinking of getting a used XT ring from the forums until I can afford and new crankset next year. Any advice on how to check whether it will fit? I obviously need to make sure the bolt pattern looks the same but any pointers would be appreciated.

Thanks.

Posts

  • nicklousenicklouse Posts: 50,675 Lives Here
    you may need to do some fileing as shimano keeps changing the shoulder diameters.

    the BCD of the 4 bolt is constantish and should be 104mm
    "Do not follow where the path may lead, Go instead where there is no path, and Leave a Trail."
    Parktools :?:SheldonBrown
  • pealypealy Posts: 107
    Thanks.. So It's likely to fit okay, even if it needs a little encourgement?
  • Yep - holes for bolts should be in the correct matching place - just the odd lump and bump might need removing.

    I really wouldn't want to file a M770 though - the outers are about 70 quid, perhaps a deore may be better suited?
  • pealypealy Posts: 107
    really wouldn't want to file a M770 though - the outers are about 70 quid, perhaps a deore may be better suited?

    Thanks, I'm just getting a used one for £10 so not too worried really, didn't want to get something too cheap as the bent one was a right pain at the weekend, had to stick to the small ring the whole time as it was bent in against the middle one.
  • pealypealy Posts: 107
    FWIW - it did fit... Even without any filing or grinding..
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