Supercharger.

Discussion in 'Motorized Bicycle General Discussion' started by Yume, Jun 14, 2015.

  1. Yume

    Yume New Member

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  2. Agreen

    Agreen Member

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    4 stroke only. Forced induction is... complicated... for 2 strokes. Not impossible, but nearly.
     
    #2 Agreen, Jun 14, 2015
    Last edited: Jun 14, 2015
  3. crassius

    crassius Well-Known Member

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    considered turbo, but chinese engines just aren't stout enough in materials to do much more than they do stock
     
  4. YesImLDS

    YesImLDS Member

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    Problem is with our lay out you won't hold boost. The exhaust is right next to the transfer ports so realistically it will never really work on our engines. Some 2 strokes have different ways they work via methods I have no idea because I have never touched another 2 stroke, but are possible to boost. Realistically though it's not possible on your common china girl
     
  5. wheelbender6

    wheelbender6 Active Member

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    I wish this kit was available before I sold my Honda S-90.
     
  6. LandSpeedRecord

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    Should still work on a China Girl if you have a large expansion chamber with a rapid taper on the trailing cone. From what I have seen of the turbo charged 2 strokes that is how they get a strong pulse to hold in the boost for lack of a better explanation. What we need here is for someone on the forum to purchase one and have it delivered to my work address so my wife didn't see it. Then I will install it, probably extend the crank on the Magneto side for simplicity to drive it. I actually have a YZ125 expansion chamber already sitting there I will cut up and donate to the project. Then I will test it extensively and provide you all with the results. Please feel free to PM me for details on shipping.
     
  7. LandSpeedRecord

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    Then we can have a viable power adder an only 4 times the cost of the kit ha ha. Seriously though it looks pretty cool.
     
  8. dtv5403

    dtv5403 New Member

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    I personally think it'd be easier to add an exhaust valve than a Turbo. Its not exactly a valve, but that's what it's referred to as, and it opens and closes automatically with engine rpms. They're used on racing two strokes.
     
  9. dtv5403

    dtv5403 New Member

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  10. Tony01

    Tony01 Active Member

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    Look up buddfab 50cc on google. They built a 50cc streamliner that goes 150mph powered by a 20hp turbo 2-stroke, using a suck through turbo with tuned pipe. The tuned pipe charges the exhaust, matching the intake charge.

    I would be cautious with a suck through setup though. If you don't know what you're doing and you get early detonation the entire compressor becomes part of the combustion chamber. May be more work, but safer, to build a blow through with pressurized carb enclosure and a pressure-checked fuel pump.
     
  11. boxcar

    boxcar New Member

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    I think it may be less work to slap a YZ 125cc engine in the thing and be done with it....
     

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