bike frame sizing...

Discussion in 'Bicycle Mechanics and Repairs' started by Maz, 18 Feb 2008.

  1. Maz

    Maz Legendary Member

    yes, sorry, it must've been asked before so apologies for that.

    If a bike has a 57cm frame for example, between which 2 points is that measurement made?

    Thank you.
  2. domtyler

    domtyler Über Member

    Depends on manufacturer. There is no industry standard. I.e. it's up to you to check.
  3. OP

    Maz Legendary Member

    Will do, cheers dom.
  4. hubgearfreak

    hubgearfreak Über Member

  5. OP

    Maz Legendary Member

    Yes it does. Thank you.

    I would've thought (intuitively) that the most important measurement would be the distance from the floor to the top of the top tube, so you know if you can freely straddle it without crushing your balls on it. Everything after that seems secondary!
  6. Stick on a Giant

    Stick on a Giant New Member

    Maz, I can see where you're coming from! but in reality, if the other elements all fit (and I'd say that the reach is most important) then you're unlikely to have a problem with standover height unless you're particularly short. e.g. Mrs G has just got a Spesh Tricross in 49cm size, and although the reach is fine, and actually slightly shorter than her made-to-measure, based on Bikefitting measurements, road bike, she can only just straddle the top tube - OK with bike shoes on, but not without. - She's 5ft 0.
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