Crankset and BB cross compatibility

always_tyred
always_tyred Posts: 4,965
edited January 2009 in The workshop
I'm way out of date with the new BB standards.

Does anyone know if I will be able to simply replace a new Truvativ (with outboard bearings) road crankset with a SRAM rival - now that they are owned by the same company?

Comments

  • cjcp
    cjcp Posts: 13,345
    The specs on Wiggle suggest they might be compatible.
    FCN 2-4.

    "What happens when the hammer goes down, kids?"
    "It stays down, Daddy."
    "Exactly."
  • always_tyred
    always_tyred Posts: 4,965
    cjcp wrote:
    The specs on Wiggle suggest they might be compatible.
    I know, but I just keep having visions of feeling like a total pillock trying to explain to the missus why my new charnkset won't fit. :oops:
  • cjcp
    cjcp Posts: 13,345
    Always Tyred wrote:
    cjcp wrote:
    The specs on Wiggle suggest they might be compatible.
    I know, but I just keep having visions of feeling like a total pillock trying to explain to the missus why my new charnkset won't fit. :oops:[/quote


    I think you'll be fine. (There is no real basis for that comment. :) )

    You probably have, but have you checked out this stuff: http://sram.com/en/service/truvativ/vie ... subcatID=2
    FCN 2-4.

    "What happens when the hammer goes down, kids?"
    "It stays down, Daddy."
    "Exactly."
  • always_tyred
    always_tyred Posts: 4,965
    cjcp wrote:
    Always Tyred wrote:
    cjcp wrote:
    The specs on Wiggle suggest they might be compatible.
    I know, but I just keep having visions of feeling like a total pillock trying to explain to the missus why my new charnkset won't fit. :oops:[/quote


    I think you'll be fine. (There is no real basis for that comment. :) )

    You probably have, but have you checked out this stuff: http://sram.com/en/service/truvativ/vie ... subcatID=2
    Actually, I hadn't spotted that. The acronyms all look the same, so it does seem to be okay.

    Thanks!
  • robbarker
    robbarker Posts: 1,367
    In theory yes, although the reality is sometimes different. The worst case scenario is you'll have to get a new BB, which is no bad thing with outboard bearings which do need replacing fairly regularly.
  • cjcp
    cjcp Posts: 13,345
    robbarker wrote:
    In theory yes, although the reality is sometimes different. The worst case scenario is you'll have to get a new BB, which is no bad thing with outboard bearings which do need replacing fairly regularly.

    Rob - how often? Might be a piece of string question, but I'm riding 140-150 miles a week on the commute in all weathers and I've noticed the creak from the BB is returning more quickly. It's done about 10,000 miles I would have thought, so was going to replace it shortly.
    FCN 2-4.

    "What happens when the hammer goes down, kids?"
    "It stays down, Daddy."
    "Exactly."

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