26/29 inch Gearing- Mtbr.com
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  1. #1
    And He was Not
    Reputation: Enoch's Avatar
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    26/29 inch Gearing

    Are the ratios about the same on 26 and 29 inch tires as long as your working off the final drive #

    Example 32/18 x 26 inches=46.2
    32/20 x 29 inches=46.4

    Is this a good way to figure this?

  2. #2
    paintbucket
    Reputation: wooglin's Avatar
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    Yup. Add two teeth in the back to your 29er for the rough equivalent.
    When the going gets weird its bedtime.

  3. #3
    being is
    Reputation: pseudo intellectual's Avatar
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    yes

    cept someone said that 26 is really ~26.5. close enough. for my KM i use 32/18 and 34/20 which is slightly easier.

    with some of the new 29" tires 29 may now be creeping up on 29.5 so who knows. experiment. just figure a 29/26 conversion factor. that will be accurate enough.

  4. #4
    Nouveau Retrogrouch SuperModerator
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    Quote Originally Posted by pseudo intellectual
    cept someone said that 26 is really ~26.5. close enough. for my KM i use 32/18 and 34/20 which is slightly easier.

    with some of the new 29" tires 29 may now be creeping up on 29.5 so who knows. experiment. just figure a 29/26 conversion factor. that will be accurate enough.
    Every model tire has a different actual diameter. Can not really make any generalizations.

    You can download the Excel gear inch calculator from my site. Look on the "Tech" page.
    mtbtires.com
    The trouble with common sense is it is no longer common

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