Motorized Bicycle Gear Calculator

Discussion in 'DIY Home Built Motorized Bicycle (non kit)' started by Dave31, Nov 27, 2008.

  1. Dave31

    Dave31 Moderator
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  2. Dan

    Dan Staff
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    Fair, that is awesome. Thanks for putting them all in one place.
     
  3. deacon

    deacon minor bike philosopher

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    the mph one does nothing for me. I entered it all in and it just sits there. I must be doing something wrong.
     
  4. Dave31

    Dave31 Moderator
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    Yeah I tried it Deacon and it does not work for me as well ?????

    If you guy's run across anymore post them here. :ride2:
     
  5. jasonh

    jasonh New Member

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    works fine for me. Only when using Internet Explorer. 13, 200, 1 should get you 15.something.
     
  6. Dave31

    Dave31 Moderator
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    I guess its like the chat box for me...one day it will work for like five minutes..then all it says is "loading" it has not worked for me in weeks.
     
  7. carl_baron123

    carl_baron123 New Member

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  8. reg454

    reg454 New Member

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    This is a great way to see "how fast" someone could relatively go on a motor bike at a certain rpm. I used it with a 26" rim 11tooth drive sprocket, 36tooth rear sprocket, and an rpm of 2200. It gave me the speed of 52mph. But somehow this does not seem right. But I don't know when I buid my bike I will put a tach and a speed gauge to see how close it is.
     
  9. tylerlough

    tylerlough New Member

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    454 you forgot to add in the gear reduction on the clutch gear, that makes a big difference. I'm not sure what the reduction ratio is though.
     
  10. Dan

    Dan Staff
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  11. damonjackson_spl

    damonjackson_spl New Member

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    how do you work out multible rations like a 3way jackshaft?
     

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  12. ducatiluke

    ducatiluke New Member

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    give me all your gear info ill work it out and show you
     
  13. damonjackson_spl

    damonjackson_spl New Member

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    sprocket / jackshaft / jackshaft / wheel

    Pedal Drive
    23 / 20 / 40 / 14

    Honda GX50 Drive
    11 / 22 / 40 / 14

    I can change sprockets easily so would love to know how to work it out mathamatically :D

    cheers
     
  14. generalmyers

    generalmyers New Member

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    im doing mine by diameter so i want to know how to get the number of teeth out of diameter
     
  15. wildemere

    wildemere New Member

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    HT primary reduction is 82t:20t

    0r 4.1:1
     
  16. ducatiluke

    ducatiluke New Member

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    chech out attachment

    i think this exp;ains things mathamaticlly
     

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    #16 ducatiluke, Jul 15, 2009
    Last edited: Jul 15, 2009
  17. Coval_PL

    Coval_PL New Member

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    Here is my version of gear calc. It's small Open Office's spread sheet. It allows to calculate spead depends of wheel size, engine's RPMs and sprockets sizes in standard engine set and Shift Kit with standard bikes gears on rear wheel.
    I hope it will be usefull for somebody :)
    It'll be nice to see some suggestions and ideas to bild up this calculator.
     
    #17 Coval_PL, Aug 15, 2009
    Last edited: Aug 30, 2009
  18. Goat Herder

    Goat Herder Gutter Rider

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    Nice links guys. Coval_PL another linux user aye!
     
  19. Coval_PL

    Coval_PL New Member

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    Sorry, I,m not :) But I use as much non-microsoft software as I can :D
     
  20. Dan

    Dan Staff
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    Very cool and thanks for sharing Coval.

    I associated this with MSW infopath 2003 and won't work. Any one know how I can get it to open in another program?
     

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