80cc Engine

Discussion in 'Motorized Bicycle General Discussion' started by Garrett, Nov 22, 2008.

  1. Garrett

    Garrett New Member

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    Hey guys im new here and I want to install an 80cc engine on my Specialized hardrock mountain bike. Its an older model... maybe like 1994-1996 and I was curious to know if the engine would work.

    Thanks!

    Garrett
     
  2. biken stins

    biken stins New Member

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    Welcome Garret.
    Somewhere on the site or someone can tell you the L,H,W needed.
    What size is your bike ?
    Where there's a will there's away. Good Luck,
     
  3. Dave31

    Dave31 Moderator
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    Hello Garrett, Welcome to the forum :D

    Most 24" or 26" bicycle with diamond frame and horizontal top tube should have sufficient space to mount motor.

    At least 12.5 inches running along the seat tube from the top of the bottom bracket to the bottom of the top tube.Tubing size from 1-1.5inches on the both the seat and down tube. Plus or minus 70deg. above the bottom bracket between the down tube and the seat tube. Inner distance between pedals needs to be greater than 4.5 inches in width to clear the 4.5inch wide motor.


    [​IMG]
     
  4. stude13

    stude13 New Member

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    there are no 80cc engines. sue them for false advertising.
     
  5. tyrslider

    tyrslider New Member

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    Those bikes make great solid mb's
     
  6. Garrett

    Garrett New Member

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    ok... i think my bike is a 26 inch becuz it says 26x1.25 or something on the wheel. Ill take a picture of it and post it.
     
  7. tyrslider

    tyrslider New Member

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    it's most likely a 19" frame / seattube; it'll work great!
     
  8. Garrett

    Garrett New Member

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    ok, do u know if i can adjust the handle bars on a bike like that?i want to raise them up a bit becuz it feels like im riding a crotch rocket haha
     
  9. Bikeguy Joe

    Bikeguy Joe Godfather of Motorized Bicycles

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    You can raise the gooseneck a little on most bikes, but you'd be better off just putting on a set of bars that feel right.
     
  10. Bikeguy Joe

    Bikeguy Joe Godfather of Motorized Bicycles

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    I'm looking at photos of your bike and I think it's gonna be a squeeze to fit the engine in there.....I may be totally wrong but I would check measurements.
     
  11. Garrett

    Garrett New Member

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    I keep trying to add an image of my bike and it isnt working... anyone want to enlighten me?
     
    #11 Garrett, Nov 27, 2008
    Last edited: Nov 27, 2008
  12. Dave31

    Dave31 Moderator
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  13. Garrett

    Garrett New Member

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  14. Garrett

    Garrett New Member

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    Here is the bike... let me know if you think the engine will fit.

    [​IMG][/IMG]
     
  15. Ghost0

    Ghost0 New Member

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    It will fit no problem. You also will not pedal as much with the engine so you can lower your seat. That should make the ride more comfortable. But some new raised bars would help as well.
     
  16. old motorbike

    old motorbike New Member

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    Looks just like mine, it fit easy.
    1st pic: the original install.
    2nd pic install with shift kit.
     

    Attached Files:

  17. Garrett

    Garrett New Member

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    Wait a second, my friend and I are both studying to be engineers and we wanted to fabricate some kind of gear switching device so that we can achieve higher speeds. Did you buy this shift set or did you make it?





     
  18. Dave31

    Dave31 Moderator
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    Link to the shifter kit....Welcome to Sick Bike Parts
     
    #18 Dave31, Nov 27, 2008
    Last edited: Nov 27, 2008
  19. Garrett

    Garrett New Member

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    There was no response fair... Just my quote.
     
  20. NunyaBidness

    NunyaBidness Active Member

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    there's a link to where the shift kit can be purchased, or just drooled over like I do.
     

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