How to install an automatic clutch on to a motorized Gas bike & where to purchase

Discussion in 'General Questions' started by micchael, May 4, 2013.

  1. micchael

    micchael New Member

    I need your help. How do I install an automatic clutch on to my motorized gas bike? My motorized gas bike has a manual clutch which means it will only kick in the motor when I start pedaling and then hold down on the clutch and start giving it gas by moving my throttle.

    Next, where could I buy an automatic cluth for my motorized gas bike so that this way I can just automatically start upf the engine of my motorized gas bike without having to pedal and hold down on the clutch in order for the motor to start kicking in? Are automatic clutches expensive at all?

    Next question: In order to have an automatic clutch installed on to my gas motorized bike which is a 29" ONYX Genesis bike, would I need to have the manual clutch uninstalled before having the automatic clutch installed? If so, how would I go about unstalling my manual clutch?

    Please kindly provide me with clear instructions and/or any videos that would show me and explain the techiques pertaining to my questions asked here.

    Thanks!
     

  2. darwin

    darwin Well-Known Member

    If you install an auto clutch you will need to remove the manual clutch. A lot of sites sell the HT kits with the auto clutch, they must sell replacement parts also. Try gasbike, pirate, spooky, etc.
     
  3. Fabian

    Fabian Well-Known Member

    With a 2-stroke Chinese bicycle engine you get the best of both worlds when installing a centrifugal clutch; allowing you keep the manual clutch as well as having a centrifugal clutch.
     
  4. darwin

    darwin Well-Known Member

    OK Fabian you lost me here. If the centrifugal clutch is installed on the end of the crank where is the manual clutch located if both installed? Never seen 2 clutches on a machine before.
     
  5. wheelbender6

    wheelbender6 Well-Known Member

    I was able to keep my manual clutch after installing the auto clutch. Instead of grinding down the three posts, as recommended by the PDF, I ground some material from the inside of the new clutch cover for the needed clearance.
    I only use the manual clutch now for pedal starting.
     
  6. darwin

    darwin Well-Known Member

    Cool, any pics of that setup?
     
  7. Fabian

    Fabian Well-Known Member

    Do a Google search for:

    "Centrifugal Clutch - 48cc, 60cc, 66cc, 80cc - pull-start/pedal-start, 2 stroke"

    "Lubrication port > Modified Centrifugal Clutch - 48cc, 60cc, 66cc, 70cc, 80cc - pull-start/pedal-start, 2 stroke"
     
  8. darwin

    darwin Well-Known Member

    OK I've googled a 1000 images and can't come up with one that has 2 clutches on a bike. I'm thinking you guys are referring to a manual clutch with 2 friction surfaces that can be separated by the clutch handle disengaging those surfaces, then mated to it somehow a centrifugal clutch mated to the outside of the manual clutch. Am I wrong in this picture in my mind? What am I missing?
     
  9. Fabian

    Fabian Well-Known Member

    Your picture is completely wrong

    PM coming your way.
     
  10. OCCStingray

    OCCStingray Member

    Sorry to drag an old thread up but I would really appreciate some more info on fitting an auto clutch please.
     
  11. Fabian

    Fabian Well-Known Member

    Did you do a Google search for:

    "Centrifugal Clutch - 48cc, 60cc, 66cc, 80cc - pull-start/pedal-start, 2 stroke"


    and


    "Lubrication port > Modified Centrifugal Clutch - 48cc, 60cc, 66cc, 70cc, 80cc - pull-start/pedal-start, 2 stroke"
     
  12. Fabian

    Fabian Well-Known Member

    It will be impossible to give you any more information than this:


     
    Last edited by a moderator: Dec 15, 2015
  13. OCCStingray

    OCCStingray Member

    I have been coming up with little info for two weeks now, thank you guys.
    One more thing, where would I get one?
     
  14. Fabian

    Fabian Well-Known Member

  15. OCCStingray

    OCCStingray Member

    Fantastic, thank you.
    Have you used this one?
    Does this type also keep the manual clutch?
     
  16. Fabian

    Fabian Well-Known Member

    Yes i have



    Yes it does.
     
  17. OCCStingray

    OCCStingray Member

    Now just to find one in stock...
     
  18. darwin

    darwin Well-Known Member

    Check out the vid up north OCC.
     
  19. OCCStingray

    OCCStingray Member

    I'm not having much luck finding one :(
     
  20. Fabian

    Fabian Well-Known Member

    Just do a "Google search" for 80cc centrifugal clutch pedal-start pull-start and select the images tab.

    It wont take you long to find a vendor that sells these centrifugal clutches.
     
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