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Thread: Gear Inches

  1. #1
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    Gear Inches

    i am planning on converting my Raleigh Marathon to a single speed and have been reading up on gear ratio's. anyway i want to be cheap about it and use one of my existing chain rings and just take the other one off. i have a 52 tooth and 40 tooth on right now. i know i want about a 77ish GI which i can get with either 40/14 or 52/18. is their a difference and if so what is it and which should i go with?

    Thanks.

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    52/18 gives you more teeth overall, so your drivetrain wears less.
    Coincidentally, that's what I ride. It's verra nice.

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    that makes since

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    A bigger chainring offers more flexibility when chosing cogs; run the 52.

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    doin it

  6. #6
    Senior Member devilshaircut's Avatar
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    There was a discussion about this earlier ... if you wanted to run about that many gear inches, why not go with a 17t cog to get more skid patches?

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    Quote Originally Posted by devilshaircut View Post
    There was a discussion about this earlier ... if you wanted to run about that many gear inches, why not go with a 17t cog to get more skid patches?
    its single speed not fixed. he doesnt really need the skid patches since he will be using brakes

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