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Thread: 49 cc's of speed

  1. #1
    Join Date
    16th March 2008 - 09:35
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    1987 honda mb5
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    49 cc's of speed

    hey i was just woundering whats the fastest people have gotten up to on a 50cc scooter/pit-bike/motorbike hot or standed?

    my mb5 gets to 90kph somedays as standed but over heats and spark plug oils up.

  2. #2
    Join Date
    4th February 2007 - 19:07
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    50cc Motard
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    Auckland - North Shore
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    my bike's standard (gasgas sm50), and it'll do about 90km/hr. when i get a new sprocket, it should hit 100.

  3. #3
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    25th June 2003 - 13:54
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    RG50 has a claimed factory top speed of 105km/h

  4. #4
    Join Date
    26th May 2007 - 19:06
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    Polini 910, GP3 Ducati
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    My polini GP3 39.8cc will pull just over 100km with the current geraing but I have just got a 50kit for it and a new 11 tooth front sprocket (current is 10) so should do a fair bit more soon.

  5. #5
    Join Date
    3rd August 2006 - 19:35
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    My 2004 Gilera DNA 50 got up to 105kph.

    A fully tuned one will do 130+

    check out this vid, 0-100 in 6.2secs

    http://www.youtube.com/watch?v=r9Pdm...eature=related
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  6. #6
    Join Date
    11th November 2007 - 14:07
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    2008 polini 910 4.2, 2008 suzuki drz125
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    auckland nz
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    my polini 39cc carena will get up to about 75km/h
    THE ONLY RULE IS, THERE'S NO RULES

  7. #7
    Join Date
    1st March 2008 - 20:53
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    1992 ZXR250
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    Christchurch
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    My friends cheap arse chinese 50cc scooter did 100 indicated.. then i made a cheapo style ram tube out of a coke bottle and played with the carb a wee bit and it got 110 lol
    Go BIG or go home

  8. #8
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    3rd December 2005 - 19:41
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    94 gsxr1100
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    wellington
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    nice one gadgit is it polini or bzM

  9. #9
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    10th September 2006 - 14:44
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    Does my R1 count?

  10. #10
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    17th November 2002 - 11:00
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    Quote Originally Posted by bungbung View Post
    RG50 has a claimed factory top speed of 105km/h
    luke has been clocked at 110k at taupo, this is without changing the gearing for the track...

    but peter sales has the NZ recored for a 50cc bike... something like 90m/hr

    MILES an HR!!!!!

    built by himself


    what a ride so far!!!!

  11. #11
    Join Date
    26th May 2007 - 19:06
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    Polini 910, GP3 Ducati
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    Quote Originally Posted by orange View Post
    nice one gadgit is it polini or bzM
    Got a 6port BZM coming was quicker then waiting for the polini kit to come in even tho I know you said the BZM had a flat spot ...New 50 kit, gearbox side plate and seal new clutch plate and bell new 11 tooth, gasket kit, chain and thinking about bearings ...umm may as well be a new engine lol poked a few $K into it hopefuly it all works out ok...

  12. #12
    Join Date
    3rd December 2005 - 19:41
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    94 gsxr1100
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    BZM will pull hard of bottom STD but will it have the top end power that open needs will be the question.
    Will be running a 50cc polini up this week and then my cylinder on the flowbench, will let you know how each goes and approx HP for them, might even throw some pics up on here 4 you.

  13. #13
    Join Date
    26th May 2007 - 19:06
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    Polini 910, GP3 Ducati
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    Paeroa
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    I'll be trying the 17.5mm Dell carb first then the 19mm to see the difference.... it's also not running a standed polini pipe it's also BZM and a stuffed crank not a 6.2 crank that most of the "05 GP3's came with being a Duke rep they came with upgraded internals but not sure if it's going to make a difference to the end result... I have refitted the 17.5 carb to the 40 and it's bout the engine back to life I keeped up with loosie for a few laps until his corner speed out ran mine... Keep me posted on ya results ..

  14. #14
    Join Date
    3rd December 2005 - 19:41
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    94 gsxr1100
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    wellington
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    here you go Gadgit, this is a polini ported cylinder.

    the owner doesn't want me to say what flow rates we have got out of it and I can understand as there is alot of coin involed in a project like this. you wouldn't see anyone with a china made cylinder doing this.
    this cylinder has had main/secondards tested booster and exhaust and we have found some very interesting results.

    When I run mine up I will post results as I'm not shy.
    Attached Images Attached Images   

  15. #15
    Join Date
    26th May 2007 - 19:06
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    Polini 910, GP3 Ducati
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    Paeroa
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    Good show Orange whose barrel is it??? or is that top secreat too lol do you still have the 10 port??

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