building RC truck with motor

Discussion in 'Motorized Bicycle General Discussion' started by jonnypyro, Mar 25, 2009.

  1. jonnypyro

    jonnypyro New Member

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    hey guys i have a '80'cc bicycle motor and was told by the police that i need to have my license and register the bike. so since i had to get my license anyways i just decided to buy a street bike. Anyways now i have this motor and want to build a custom rc car chassis and mount it on. My question is, what size sprocket would i need to use in back? the front sprocket i beleive is 10 teeth, and the tires are 7".i want a decent top speed and good torque. Thanks guys
     
  2. ibcnya

    ibcnya New Member

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    I really dont think its gonna matter what sprocket you use on that project. the power to wiehgt ratio is gonna be so sick its gonna fly no matter what.
     
  3. Speedy Wilson

    Speedy Wilson New Member

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    hey, i got a link to a speed calculator i use on a diy go kart site. It works for anything. For the "axle teeth" put the # of teeth on the rear sprocket....hope this helps

    Speed Calculator For Go Karts and Mini Bikes
     
    #3 Speedy Wilson, Mar 25, 2009
    Last edited: Mar 25, 2009

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