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  1. #1
    awesome
    Reputation: dblspeed's Avatar
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    Hub RPM per given speed?

    Hi all, any math guys in here? How do I calculate hub RPM for a given speed? ... thanks
    Last edited by dblspeed; 03-30-2011 at 07:51 AM.

  2. #2
    What could go wrong ...
    Reputation: Zoke2's Avatar
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    is this a trick question ... the axle doesnt spin, the hub spins on the bearings
    I used to ride to Win ... Now I ride to Grin

    While my guitar gently weeps, my bike sits there mocking me

  3. #3
    awesome
    Reputation: dblspeed's Avatar
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    Quote Originally Posted by Zoke2
    is this a trick question ... the axle doesnt spin, the hub spins on the bearings
    whoops! edited the OP.

  4. #4
    transmitter~receiver
    Reputation: meltingfeather's Avatar
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    *deleted double post*
    Quote Originally Posted by pvd
    Time to stop believing the hype and start doing some science.
    29er Tire Weight Database

  5. #5
    transmitter~receiver
    Reputation: meltingfeather's Avatar
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    all parts of the wheel rotate at the same rpms as well

    rpm = 336*(speed in mph)/(wheel diameter in inches)

    example:
    riding a 29er at 10 mph
    rpm = 336*10/29 = 116 rpms
    Last edited by meltingfeather; 03-30-2011 at 08:14 AM.
    Quote Originally Posted by pvd
    Time to stop believing the hype and start doing some science.
    29er Tire Weight Database

  6. #6
    awesome
    Reputation: dblspeed's Avatar
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    Quote Originally Posted by meltingfeather
    all parts of the wheel rotate at the same rpms as well

    rpm = 336*(speed in mph)/(wheel diameter in inches)

    example:
    riding a 29er at 10 mph
    rpm = 336*10/29 = 116 rpms
    thanks much

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