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  1. #1
    Life Is Short
    Reputation: fatcat's Avatar
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    Mar 2006
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    Does a 650b with a 26 x 1.5 tire qualify as a CX bike?

    It was a 26" XC bike.I have WTB Trail 650b rims mounted with Continental 26 x 1.5
    tires (27.5). I also put a larger 46t big ring (largest that can fit). Eye balling the wheels it
    doesnt quite look as large as a 700c but it looks bigger than if someone put skinny tires on a 26".

    I'd like to buy a cross bike but I may get laid off next month.

  2. #2
    mtbr member
    Reputation: Fakie1999's Avatar
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    Feb 2010
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    It qualifies as a mtb. If you're not doing a sanctioned race, it'll be fine to try out cross with.

  3. #3
    Nouveau Retrogrouch SuperModerator
    Reputation: shiggy's Avatar
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    Quote Originally Posted by fatcat View Post
    It was a 26" XC bike.I have WTB Trail 650b rims mounted with Continental 26 x 1.5
    tires (27.5). I also put a larger 46t big ring (largest that can fit). Eye balling the wheels it
    doesnt quite look as large as a 700c but it looks bigger than if someone put skinny tires on a 26".

    I'd like to buy a cross bike but I may get laid off next month.
    What is the tire size? The bead seat diameter?
    26 x 1.5" is 559mm
    26 x 1-1/2 would be 584mm, 650B. Would not measure as large as 27.5" outside diameter, though.
    Note that 1.5" and 1-1/2" are not the same as tires are concerned: Tire Sizing Systems

    In any case, your bike can be used for 'cross, but it is not a cyclocross bike.
    mtbtires.com
    The trouble with common sense is it is no longer common

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