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  1. #1
    mtbr member
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    Dec 2004
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    2,541

    Two speed speed chart at 100RPM

    Gear chart using MPH @ 100 RPM
    For 700 X 56 / 56-622 / 29 inch tire with 175 mm cranks
    With Custom Sizes Cassette
    32 6.3 % 34 5.9 % 36
    16 17.3 18.4 19.5
    12.5 %
    18 15.4 16.4 17.3
    11.1 %
    20 13.9 14.7 15.6
    10.0 %
    22 12.6 13.4 14.2

    Above is a chart of possibilities for my dinglespeed. I would like to go 16 and 22 in the back and 32 and 38 in the front but I cannot get a 94 crank bolt pattern ring in 38 so I have decided to go 18 22 in back and 32 36 in front. At 100RPM I have about a 5 MPH faster gear in my larger combo.
    From Sheldon Brown

  2. #2
    mtbr member
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    Mar 2007
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    820
    That's what I'm toying with doing, only 34/32 in front, and 18/22 in back. But since 32/18 is perilously close to the 34/19 I'm currently running, I'll probably just go with the 32 ring, and ditch the 34. No chain line issues that way.

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