biggest engine?

Discussion in 'Motorized Bicycle General Discussion' started by rickie h, Nov 13, 2009.

  1. rickie h

    rickie h New Member

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    the biggest engine kit ive seen is an 80 cc with 69.7 cc displacement...anyone seen bigger?
     
  2. TheOtherStyle

    TheOtherStyle New Member

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    i've seen much bigger....but 800CI doesnt fit in a bike :D
     
  3. rickie h

    rickie h New Member

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    well id like something bicycle worthy :p
     
  4. 42blue15

    42blue15 New Member

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    No reason to commercially manufacture anything much bigger, unless you want to manufacture rear wheels as well.

    When you start putting much-larger engines on bicycles (4-5+ HP) you run into the issue of the rear wheel bearings and spokes dying very early deaths. You can get thicker spokes with the Worksmans and Huskys, but the bearings are still the same.

    The couple bikes I've seen (online) with Lifan motorcycle engine/trans setups--one had a moped rear hub laced into a bicycle rim, and the other used a whole motorcycle rear wheel.

    ------

    If you want something that will really scream, look at some of the snowmobile engines.... They're still mostly 2-strokes, so they're pretty compact and powerful--the SMALL ones are 30-40+ HP, and they have a CVT already built-in.
    Ted Wilkins - Snowmobile engines | FF Web
    ~
     
  5. azbill

    azbill Active Member

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    whizzers are 138cc, and I have seen HF 79cc four strokes as well :)
     
  6. Dan

    Dan Staff
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  7. TheOtherStyle

    TheOtherStyle New Member

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    ROFL @ Dan's pic
     
  8. KilroyCD

    KilroyCD New Member

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    Dan, I think this one might have yours beat. (LOL)
     

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  9. Dan

    Dan Staff
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    LOL KillRoy! Man, would need some really wide peddles for that thing!
     
  10. Finfan

    Finfan New Member

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    You know Dan you MAY have to modify the frame a little to fit that engine. Tune it well, any blow back through the intake could be painful!

    laff
     
  11. MaxPower

    MaxPower New Member

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    The fastest!!!!
     

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  12. MaxPower

    MaxPower New Member

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    One more :)
     

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  13. Dan

    Dan Staff
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    #13 Dan, Nov 15, 2009
    Last edited: Nov 15, 2009

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