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proper way to measure bb height?

Discussion in 'The Shop' started by dfinn, Oct 9, 2005.

  1. dfinn

    dfinn Turbo Monkey

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    i just measured my trail bike and it's 12.5". That seems awfully low compared to the other specs I've seen for bikes. My guess is that I measured it wrong. I measured from the floor to the very bottom of the bb shell. Is that right?
     
    #1 -   Oct 9, 2005

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  2. WV Hippy

    WV Hippy Chimp

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    Floor to center. (Silly isn't it)
     
  3. OGRipper

    OGRipper Turbo Monkey

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    NORCAL is the hizzle

    Yes, floor to center of the bb axle. And I don't think it's silly, there is too much variation in shell thickness and (to a lesser extent) bb size to get a reliable measurement any other way.
     
  4. BMXman

    BMXman I wish I was Canadian

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    If you want a truly accurate BB height measure the height from the ground to the center of your BB spindle when you're on the bike. You will need a freind to help though.....D
     
  5. Kntr

    Kntr Turbo Monkey

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    All BB heights are measured without a rider on the bike.
     
  6. maxyedor

    maxyedor <b>TOOL PRO</b>

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    why do you care you got a foes mother f'n fly in my opinion the best xc-downhill bike in existance it can do everything short of road. does the geometry matter?
    by the way the bb height on my large '05 fly with a 888 measures out to just between the two bigg scars on my right shin, the best for free-ride where as the left shin scars are downright cross-countryish.

    for a truly accurate measurment you rely need to do it without tires as there height does affect the overall height of the bike.