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  1. #1
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    Gear/inch formula

    I can't seem to remember the formula to determine gear inches. Can somebody remind me? Thanks.

  2. #2
    a blend of wit and charm Moochers_Dad's Avatar
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    you'll need a slide rule. it's crank teeth divided by cog teeth, multiplied times wheel diameter.

    it's easier to go here:

    http://www.sheldonbrown.com/gears
    Last edited by Moochers_Dad; 07-13-06 at 06:45 PM.

  3. #3
    mousse de chocolat Moose's Avatar
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    crank teeth divided by cog teeth multiplied times wheel diameter.
    52/11x27=127.64 gear inches

  4. #4
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    Quote Originally Posted by Moose
    crank teeth divided by cog teeth multiplied times wheel diameter.
    52/11x27=127.64 gear inches
    Cool, thanks!

  5. #5
    Nothing Short of Thankful Identity Crisis's Avatar
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    I refer to Sheldon's site a lot for gear inches and everything else bicycling. My LBS mechanic pointed me out to this site a few weeks ago, a pretty slick interface, a lil more info too...

    http://www.jbarrm.com/cycal/cycal.html

  6. #6
    Videre non videri
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    However, if you want true gear inches, you'd better use the actual wheel diameter. A 700C wheel with narrow tyres is typically 26" in diameter. My 26" wheels with narrow slicks are a mere 24.5".

  7. #7
    Senior Member
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    I believe you asked this exact question a few days ago and it led to an absurdly long thread for something so simple. Next time try the search function.

  8. #8
    mousse de chocolat Moose's Avatar
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    Quote Originally Posted by HillRider
    I believe you asked this exact question a few days ago and it led to an absurdly long thread for something so simple. Next time try the search function.
    Don't be an arse. Here is the thread your refering to:

    Gear/inch formula

    Check the dates of the OP. On the Board it did show smelly as the thread starter but somehow Retro's reply started a new thread with the same title. It was a glitch.

    You are very salty.

  9. #9
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    Quote Originally Posted by Moose
    Don't be an arse.
    Check the dates of the OP. On the Board it did show smelly as the thread starter but somehow Retro's reply started a new thread with the same title. It was a glitch.
    Not trying to be. The forum does get the exact same question from the exact same OP on occasion and this appeared to be one of those times.

  10. #10
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    I'm sorry. I didn't mean to itch my glitch in public!

  11. #11
    mousse de chocolat Moose's Avatar
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    As for the gear/inch topic being beat into submission in the imposter thread, I am with HillRider. Don't get too caught up in the numbers, just ride.

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