Question about octalink chainset

mac_man
mac_man Posts: 918
edited April 2013 in MTB general
My bike has what appears to be an octalink BB. It currently has a deore chainset which is fairly knackered. Will any other Octalink chainset fit? Just not sure if there are any differences in the splines etc. Seen an 'as new' Deore chainset on the eBay for £40 which would do the job nicely. Just don't want to order and find it doesn't fit.

Can only do online ordering as I'm currently living in Spain and the nearest bike shop is miles away, and my Spanish ain't too great either.
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Comments

  • supersonic
    supersonic Posts: 82,708
    Depends on the length of the bottom bracket axle on there.

    There are two versions of octalink two, though v1 is mostly seen on road bike stuff and old xtr.
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  • welshkev
    welshkev Posts: 9,690
    Yo necissita un octalink chainset para esto por favor? :lol:
  • mac_man
    mac_man Posts: 918
    supersonic wrote:
    Depends on the length of the bottom bracket axle on there.

    There are two versions of octalink two, though v1 is mostly seen on road bike stuff and old xtr.

    OK... it's deffo V2. Just taken the cranks off and checked on the http://sheldonbrown.com/bbsize.html

    Axle length looks to be 115/116mm

    Crank length measured from centre of pedal axle to centre of bb axle is 175mm.

    So would this work? http://www.chainreactioncycles.com/Mode ... elID=58156

    And is there much advantage over buying another Deore crankset?

    I was going to get some new chainrings, but it seems cheap enough to get a whole new chainset...
    Cool, retro and sometimes downright rude MTB and cycling themed T shirts. Just MTFU.

    By day: http://www.mtfu.co.uk
  • supersonic
    supersonic Posts: 82,708
    You need look for the crankset in Shimano Tech Docs to find out what axle length is needed. Can be a bit of a pain, but only way to be sure!

    I'd consider a whole new system:

    http://www.merlincycles.com/bike-shop/m ... et-bb.html
    GT ZASKAR CARBON TEAM

    VOODOO CANZO

    Come and see me at https://www.facebook.com/biketyke/
  • mac_man
    mac_man Posts: 918
    supersonic wrote:
    You need look for the crankset in Shimano Tech Docs to find out what axle length is needed. Can be a bit of a pain, but only way to be sure!

    I'd consider a whole new system:

    http://www.merlincycles.com/bike-shop/m ... et-bb.html

    Hmmm... I think I might just stick with just getting a middle chain ring, as this is the one that's knacked good and proper. The new chain won't run on it at all, but the outer and granny seem to run fine.

    If Octalink is so old school I might as well wait till the BB goes before replacing everything. Least now I can afford some blingy pedals :lol:
    Cool, retro and sometimes downright rude MTB and cycling themed T shirts. Just MTFU.

    By day: http://www.mtfu.co.uk
  • mac_man
    mac_man Posts: 918
    Just been looking at chainrings... seem to be plenty of those to choose from as well. So how do I know which to buy? CRC do 2 Deore... http://www.chainreactioncycles.com/Sear ... +chainring
    Cool, retro and sometimes downright rude MTB and cycling themed T shirts. Just MTFU.

    By day: http://www.mtfu.co.uk
  • nicklouse
    nicklouse Posts: 50,675
    take a punt you have a 50% chance that you will need to take a file to it.

    bolt holes will be right.
    "Do not follow where the path may lead, Go instead where there is no path, and Leave a Trail."
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  • mac_man
    mac_man Posts: 918
    nicklouse wrote:
    take a punt you have a 50% chance that you will need to take a file to it.

    bolt holes will be right.

    LOL... my metalwork skills have seen better days. I'll take the chainset to bits and see which of the 2 looks most like the current one.
    Cool, retro and sometimes downright rude MTB and cycling themed T shirts. Just MTFU.

    By day: http://www.mtfu.co.uk
  • nicklouse
    nicklouse Posts: 50,675
    dont bother the diference is only about a mm on the shoulders that sit on the cranks. inner and outer rings are different. Shimano change which is the bigger as and when they feel like it.
    "Do not follow where the path may lead, Go instead where there is no path, and Leave a Trail."
    Parktools :?:SheldonBrown
  • mac_man
    mac_man Posts: 918
    nicklouse wrote:
    dont bother the diference is only about a mm on the shoulders that sit on the cranks. inner and outer rings are different. Shimano change which is the bigger as and when they feel like it.

    Just bodge it then :lol:
    Cool, retro and sometimes downright rude MTB and cycling themed T shirts. Just MTFU.

    By day: http://www.mtfu.co.uk
  • nicklouse
    nicklouse Posts: 50,675
    or not. like I said it is 50/50.
    "Do not follow where the path may lead, Go instead where there is no path, and Leave a Trail."
    Parktools :?:SheldonBrown

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