????motor quality and cc????

Discussion in 'Motorized Bicycle General Discussion' started by racing fan, May 21, 2011.

  1. racing fan

    racing fan New Member

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    i have been looking for another kit for a long time now i hear there are 48cc 55cc 58cc 66cc 70cc 80cc kits i see the 48cc all the time and the 80cc ones now i hear that grubee and others that make the 80cc ones over state the cc's and there 66cc rated or sold as 80cc engines is this true on all them

    is there a true 80cc kit out there?

    i hear phantom makes a 58cc kit hows the quality on it?
    is it really 58cc?
    Phantom Edition Deluxe 2 Stroke 58cc Gas Engine Kit [2S-58CC-GENII-PH] - $229.99

    there are ones called jet motors and black stallion who makes them grubee???

    who makes star fire motors grubee again???

    i also see raw motors who makes them ????

    i am compiling this data for myself and to post here for new/newer guys looking for a good kit doing research do they don't get ripped off
     
  2. racing fan

    racing fan New Member

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    can any one help me out???
     
  3. oldtimer54

    oldtimer54 Member

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    There is no 80cc there all 66cc. I just ordered a new 66cc kit for $169 shipped from boy go fast on ebay. Its a Z280 the best motor Ive found.
     
  4. racing fan

    racing fan New Member

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  5. oldtimer54

    oldtimer54 Member

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    If your talking about these cheap Chinese 2 stroke there is no true 58cc or 70cc just a 49cc and a 66cc.
     
  6. racing fan

    racing fan New Member

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    OK thanks i was wondering that thanks alot
     
  7. Allen_Wrench

    Allen_Wrench Resident Mad Scientist

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    Some of your questions I've answered under your other post "Good kit bad kit...". But I see different things here that I might be able to help with.

    No, no 80cc. (though it WOULD be sweet!) The Chinese use different math/methods to figure displacement. The way we figure displacement here, we get 66cc.

    I went to that site and checked that Phantom engine, and if you schroll down you'll see it seems to be a Grubee Starfire with a few extras. At this point, please refer to my other reply to your previous post "Good kit bad kit..".
     
  8. racing fan

    racing fan New Member

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    OK thanks guys, so there is 49cc,58cc,66cc,and then powerful morini motors.
     
  9. biknut

    biknut Active Member

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    Can you tell if it's a Flying Horse motor?
     
  10. Bikesnfire

    Bikesnfire New Member

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    Here is some of my experiences with various motors in the past year. Grubee 48cc Starefire Phantom Editon, 4 motors, all excellent. Grubee 58cc Starfire standard kit, NOT Phantom, 3 motors, 2 very problematic and 1 good overall. Raw motors 66cc, 3 motors, all excellent. ZB80 which is actually 66cc, had Flying Horse sticker as manufacturer, excellent motor. Wizard 80, actually 66cc from Five Flags, my absolute smoothest and fastest motor. I actually think that one was from Boy Go Fast by the obvious BGF lettering on the inside carton. To sum it up, the only real problem motors were 2 of the 3 Grubee Starfire. Hope this info is of some help to you.
     
  11. racing fan

    racing fan New Member

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    most vendors tell you if it is flying horse, jet, ect. many have it printed on them
     
  12. oldtimer54

    oldtimer54 Member

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    Well there are pocket bike motors that work just great in a bike. Not sure of all the sizes but I think there 49cc and 52cc?
     
  13. racing fan

    racing fan New Member

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    you really don't need the gear box you just need a 70tooth sprocket
     
  14. racing fan

    racing fan New Member

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    I did not do any math there but whatever lol
    we are both wrong the avg. pocket bike motor like the cag is 47cc stock to 49cc but these motors run 8000 rpm and more if upgraded these motors are 4.25 hp stock and big bore kit you get 4.75-5hp you get them in 6,7,8 tooth sprockets and you don't half to mount this on a 26 in bike go 20 in banana bike
    these bike stock come with 55 tooth sprockets so the stock gear ratio is

    8000 rpm motor then 6 to 72 tooth on a 26 in bike

    or the same in 20 in the motor will have enough power

    BTW these aren't Chinese
     

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