BB measurements - confused

guitarguy
guitarguy Posts: 18
edited January 2010 in Workshop
Ok, so I'm getting a new BB for my new chainset, but have a few questions about the measurements.

I can see that the shell width on my current one is 68mm, but i can's see any indication of the spindle length and can't think of any way to measure it accurately. And would I need to get the same length for a double chainset as for a single?

cheers

Comments

  • maddog 2
    maddog 2 Posts: 8,114
    is it square taper/isis/octalink?

    is it Shimano/Campag?

    what is your chainset - double/triple/make/model?

    axle length doesn't tend to be on the BB itself, so it's just a case of measuring the length with a ruler.
    Facts are meaningless, you can use facts to prove anything that's remotely true! - Homer
  • guitarguy
    guitarguy Posts: 18
    I'm going from Shimano square taper Triple to FSA Isis Double
  • sungod
    sungod Posts: 17,435
    if you look on the fsa website, they recommend 108mm width isis bb for a road double
    my bike - faster than god's and twice as shiny
  • proto
    proto Posts: 1,483
    All ISIS doubles take a BB with and axle length of 108mm, irrespective of brand. .
  • guitarguy
    guitarguy Posts: 18
    ok, that makes it easier, thanks

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