Got a 44 tooth sprocket.. but ..

Discussion in 'Motorized Bicycle General Discussion' started by nomad69, Mar 26, 2017.

  1. nomad69

    nomad69 New Member

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    I'm getting 20/22 mph with the 44 tooth on a 49 cc china girl, I want to go faster, what size sprocket should I use?
    TIA
     
  2. BobbyT

    BobbyT Member

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    You should be able to go faster even with a 44 sprocket. Have you got any 4 stroking? If so you won't be able to pull a smaller sprocket.
     
  3. crassius

    crassius Well-Known Member

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    yeah, unless your weight is really high, you're not getting the right performance
     
  4. Potato_In_Exhaust

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    Aren't you the guy that almost got an aneurysm because you had trouble tuning your carburetor to run right? I think that is your problem, a stock motor can push you to 30 mph, but I remember reading your other thread you said you were over 200 pounds? Even still at that weight, I think you should be going faster than just 20 mph. I don't weight nearly as much, but you know how they sometimes have an electronic board near a school that shows you how fast you are running through a school zone? I wasn't even going full throttle and it was showing 28 mph........ and don't worry, school was out.

    I think the problem lies in your tuning.
     
  5. StevenMain

    StevenMain New Member

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    I had gotten 42.5 mph on a highly modded motor with 44t once. 10k rpms. Stock should run about 28
     
  6. nomad69

    nomad69 New Member

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    never mind..
     
    #6 nomad69, Mar 27, 2017
    Last edited: Mar 27, 2017
  7. bairdco

    bairdco a guy who makes cool bikes

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    49cc's are slower anyway. Even tuned properly with a 44t, you're lucky to hit 30.

    This has all been covered multiple times, so here's the short version.

    Smaller the sprocket, the faster top speed, by sacrificing low end torque.

    Heavy bike + heavy rider= slower speed.

    Stock engine torque + smaller sprocket = pedaling uphill.

    Smaller sprocket size is relative to what the bike can pull. Experimentation is required.
     

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