49cc china two stroke average speed

Discussion in 'Motorized Bicycle General Discussion' started by severedcorps, Jul 28, 2010.

  1. severedcorps

    severedcorps New Member

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    what is your top speed on these kits? and what is the average?

    I am only getting about 22 mph top speed, and this doesn't sound right.. I haven't read about anyone having a top speed that low..
     
  2. Dave31

    Dave31 Moderator
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    I have had motors that would only do 22-23mph. But after putting hundreds of miles on them the speed usually increases. But having a motor that only does 20-25mph is not uncommon from what I have seen.
     
  3. Kevlarr

    Kevlarr New Member

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    They'll go 32ft/secondĀ² if you drop one off a building.
     
  4. severedcorps

    severedcorps New Member

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    lol..

    ok well if that is normal, then I have no issues with it. I am buying an expansion chamber in a few weeks anyway, as soon as my local MB shop has them in.. I live close to the zoombicycles warehouse :D
     
  5. Derks420

    Derks420 New Member

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    Im hittin about 30-33 with my 49CC
     
  6. scotto-

    scotto- Custom 4-Stroke Bike Builder

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    100mph on a 66cc full blown china 2-stroke with 10t primary and a 26t rear sprocket......and then I woke up, man that thing was screamin'....what a dream!

    sorry, never owned a 49cc, but I've had my 66cc bikes up to 47mph on the flats and that was pushin' it.....hard!

    I would think after break-in, a 49cc with a 10t primary to 44t rear would cruise at 30ish mph quite easily....
     
    #6 scotto-, Jul 31, 2010
    Last edited: Jul 31, 2010
  7. Bikeguy Joe

    Bikeguy Joe Godfather of Motorized Bicycles

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    O.K., here we go again.

    No speed claims unless they are proven with video, or at least a photo of the bike with a GPS. Speedometers, especially the wart mart kind are notoriously inaccurate.

    There are so many factors to be considered when talking about "top speed" on these, like was the engine even broken in yet? running optimally? sprocket size? gas to oil ratio?

    Anyhow, 23 or so seems like you very accurately measured the speed of a 50cc bicycle engine kit running with a not quite fully broken in engine and so you are good.

    Enjoy your bike, it's not SUPPOSED to be "fast".
     
  8. severedcorps

    severedcorps New Member

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    I'm not concerned with posting the highest "top speed"

    I just want to be sure that my bike's performance falls into what is considered average for a 50 cc china. Looks like I'm good! I use my bike everyday, all it did was replace my old bike (which I used to pedal around on)

    I have a pretty reliable bike computer, I'm sure the speedometer and odometer are both very accurate
     
  9. Venice Motor Bikes

    Venice Motor Bikes Custom Builder / Dealer/Los Angeles

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    I concur with Joe... No speed claims unless they are proven!! :rolleyes:
     
  10. BarelyAWake

    BarelyAWake New Member

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    severed - Jus' ta let ya know, the quoted post above is in two parts. That first bit is a general announcement/warning regarding the posting of ludicrous & unsubstantiated top speeds, a problem we've had to face somewhat regularly given the ways of the internet lol
     
  11. Bikeguy Joe

    Bikeguy Joe Godfather of Motorized Bicycles

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    I will add that your bike will likely increase in speed with mileage. Most take at least a hundred, maybe two hundred to be fully "broken in".

    As dax always says, "Enjoy the ride".
     
  12. severedcorps

    severedcorps New Member

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    I am definitely broken in then.. I have about 300 on it
     
  13. muddybike

    muddybike New Member

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    300 kms on it or the miles thingie the states uses?
     
  14. severedcorps

    severedcorps New Member

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    I was assuming he was talking in miles, so I told him in miles.. Its in kilometers on my odometer though.. I do live in Canada
     

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