How many teeth?

Discussion in 'Motorized Bicycle General Discussion' started by ran49, May 17, 2008.

  1. ran49

    ran49 New Member

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    Ok I'm a big boy now and ready to move up to a higher gear.Running a 44 tooth on a 70cc.at the present.I don't want to give up to much low end torque or climbing ability.Anyone ever try a 40 tooth.Probably have to get it from King's.I'm not looking to race this sucker,just cruise at a little lower RPM.any thoughts?Thanks,Ron
     
  2. Ilikeabikea

    Ilikeabikea Moderator
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    Norman runs a 36 tooth on his. I've got a 38 tooth that came off a crankset that Norman had. I'm going to machine down a 50 tooth sprocket and bolt the 38 to it. I may do that tommorrow.....................
     
  3. paul

    paul Active Member

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    i am running a 40 and very happy with it. i didn't loose hardly anything on the bottom end but the top end gained alot over the 44 tooth. nice part is i can cruise at 29-30 mph without winding the motor out like i did with the 44 tooth which means less wear and tear on the motor and my body as well as not as much vibration
     
  4. Venice Motor Bikes

    Venice Motor Bikes Custom Builder / Dealer/Los Angeles

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    I love 36T sprockets with all my PK-80s.
    They go real fast & still climb hills.
    I highly recommend them!
    (^) (^) (^)
     
  5. ran49

    ran49 New Member

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    Thanks for the replies guys.I think I'll try a 40 tooth first and if its like everything else I'll eventually end up with two of everything.Ron
     
  6. HOOKWORMRIDER1

    HOOKWORMRIDER1 New Member

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    I run 37 tooth sprocket that i got at a thrift store on a little kids 10 inch wheel bike
    for five bucks.I cut the center out and welded it to three big washers and bolted it to a disc brake wheel.I made a big difference in the ride lost alot of vibration and still run 33 to 37 mph.And it will still will climb hills just a little slower.
     
  7. outdoorcat75455

    outdoorcat75455 New Member

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    With a 50T sprocket and a 26" wheel, what could I expect for my cruise speed, being powered by a 50cc 2-stroker.

    I'm looking for a cruise speed of 15 - 20 MPH. That will be my primary speed and I do not want to lug the engine down, nor over rev it.
     
  8. Venice Motor Bikes

    Venice Motor Bikes Custom Builder / Dealer/Los Angeles

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    Quote... I'm looking for a cruise speed of 15 - 20 MPH. That will be my primary speed and I do not want to lug the engine down, nor over rev it.[/QUOTE]

    You should probably just stick with a stock 44T... (Just nice easy cruising... with no lugging or over reving!) :ride2:
     
    #8 Venice Motor Bikes, May 24, 2008
    Last edited: May 24, 2008
  9. misteright1_99

    misteright1_99 New Member

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    I run a 50t and cruise at 15-18 smoothly. Top end so far is 23.......
     
  10. outdoorcat75455

    outdoorcat75455 New Member

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    Excellent info guys, I will receive my kit this coming week I will probably install the 44T to begin with just so that I can experience the exhilaration of the break neck speed. I will probably go to the 50T and put a stop on my throttle to limit the speed to 20 MPH max to keep from having to register the bike as a moped or motorcycle. This way I will still have enough power at low speeds without harming the engine, and enough throttle to give some acceleration when needed. 15 MPH is plenty fast enough for me on a bicycle, most motorists in cars and trucks will not expect you to be traveling that fast to begin with and may fail to yield to you (this happens quite often without the motor-assist). If a police officer sees me flying along at 25+ MPH it will definitely draw his attention and considering this machine is not really street legal here, I don't want to draw attention.
     

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