Replacement chain set needed

michael_d
michael_d Posts: 3
in MTB workshop & tech
I have a 2015 fury.. The outer ring gone (38teeth, inner 24 teeth). Can't find 24 ring. It's 104 bcd sram. Anyone help with other variations. Been quoted £94 for set. I volunteer with chain cycles. So with their help, replaced all bits after doing 6ooomiles. But stuck with this problem.

Comments

  • timothyw
    timothyw Posts: 2,482
    I'm not sure that you get 24 tooth chainrings with 104mm bolt circle - I think it's physically impossible.

    You might want to measure again (or perhaps give us the exact model number for your existing chainrings/chainset?)
  • steve_sordy
    steve_sordy Posts: 2,453
    The outer ring will be 104 mmBCD, but the inner will be a lot less, probably 64mm.
  • robertpb
    robertpb Posts: 1,866
    This is where you will find all those difficult to find parts, plenty of chainrings the size you are looking for. They have 56 different 64 BDC rings alone.

    https://www.sjscycles.co.uk
    Now where's that "Get Out of Crash Free Card"
  • michael_d
    michael_d Posts: 3

    That's info on outer ring.. Cheers
  • steve_sordy
    steve_sordy Posts: 2,453
    That inner ring is deffo 64mm BCD.

    BCD stands for bolt circle diameter, the diameter of the circle upon which the bolts are located.
  • larkim
    larkim Posts: 2,485
    Isn't the inner ring welded on in that case?
    2015 Canyon Nerve AL 6.0 (son #1's)
    2011 Specialized Hardrock Sport Disc (son #4s)
    2013 Decathlon Triban 3 (red) (mine)
    2019 Hoy Bonaly 26" Disc (son #2s)
    2018 Voodoo Bizango (mine)
    2018 Voodoo Maji (wife's)
  • steve_sordy
    steve_sordy Posts: 2,453
    Should be bolted through from the frame side. Unless the whole 2x ring is not meant to come apart, common on budget bikes.
  • JBA
    JBA Posts: 2,852
    If only the outer ring is worn why are you replacing the inner ring as well?
    “Life has been unfaithful
    And it all promised so so much”

    Giant Trance 2 27.5 2016 ¦ Sonder Broken Road 2021¦ Giant Revolt Advanced 2 2019 ¦ Giant Toughtroad SLR 1 2019 ¦ Giant Anthem 3 2015 ¦ Specialized Myka Comp FSR 2009
  • swod1
    swod1 Posts: 1,639
    edited January 2020
    steve_sordy said:

    Should be bolted through from the frame side. Unless the whole 2x ring is not meant to come apart, common on budget bikes.

    Sometime it is but that looks to be a 2x crank and the lower chainring has its own separate mounting bolts. Its been awhile but wasn't it only 3x cranks that the outer and middle used the same larger bolts?

    Is the poster going to be using it with a 1x by as just swap the outer ring to a 32, 34tooth or whatever narrow wide chainring?
  • larkim
    larkim Posts: 2,485
    edited January 2020
    I reckon the crankset is a X5 GXP double - from looking at the pics of this 2015 Carerra Fury (about 47s into this video - https://www.youtube.com/watch?v=Lbflee410lY ) and then looking at the pics for this ebay crankset ( https://www.ebay.co.uk/itm/Sram-S1000-Double-Chainset-2-x-10-Speed-175mm-GXP-26-39T-/333444065725 ) it does look like the small rings bolted, and a 64BCD looks right for that inner ring. Though noting that the product linked to there is a 120BCD for the outer ring.

    At £56 for new crankset in that ebay link, including BB, I think the £94 quote is a little OTT!
    2015 Canyon Nerve AL 6.0 (son #1's)
    2011 Specialized Hardrock Sport Disc (son #4s)
    2013 Decathlon Triban 3 (red) (mine)
    2019 Hoy Bonaly 26" Disc (son #2s)
    2018 Voodoo Bizango (mine)
    2018 Voodoo Maji (wife's)

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