is 40:1 ok after break in?

Discussion in 'Motorized Bicycle General Discussion' started by toker_ace, Apr 6, 2009.

  1. Cabinfever1977

    Cabinfever1977 New Member

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    im still under breakin and im using 16:1 and its running fine up to 31.5mph
    now im going to move to 20:1 and after breakin im going to use 25:1
    16:1 = 2oz oil - 1 liter gas
    20:1 = 1.6oz oil - 1 liter gas
    25:1 = 1.2oz oil - 1 liter gas

    i think i need to buy a smaller measureing cup now or maybe a tiny bottle.
     
    #21 Cabinfever1977, Apr 15, 2009
    Last edited: Apr 15, 2009
  2. Wheel Rush

    Wheel Rush New Member

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    [​IMG][/IMG]


    Break in ratio for 80cc is;

    20 to 1,= 06.4 oz.
    Synthetic 2 Stroke Oil per 128oz,;gallon gasoline.

    After the break-in period, the ratio is increased to to 35 parts gasoline to 1 part oil.
     
  3. tyrslider

    tyrslider New Member

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    I concur 1 gal = 128 oz
     
  4. Wheel Rush

    Wheel Rush New Member

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    tyrslider,

    I don't disagree with you, However, Ya can't blame me for what I'm looking at, I'm just not sure I am speaking the same language as this Conversion Person is relaying to me.

    I based my last mix on this chart ! ! ? !
     
  5. Goat Herder

    Goat Herder Gutter Rider

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    This oil topic has been good fair and clear . Yet one thing I would like to stress to newbees keep an eye on the plug color. I always preferred a dark brown. I'd rather be rich before lean!
     
    #25 Goat Herder, Apr 16, 2009
    Last edited: Apr 16, 2009
  6. Cabinfever1977

    Cabinfever1977 New Member

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    i cant look at my plug,id have to take my engine off the frame to change plug.its that tight,lol.
     
  7. Pablo

    Pablo Master Bike Builder & Forum Sponsor

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    1 US gallon = 128 fluid ounces.

    Cabin fever are you using a short plu?
     
  8. Cabinfever1977

    Cabinfever1977 New Member

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    no,im using a full size plug,and i cut a hole/notch in frame above the plug for the boot to fit into,yes its that tight and i really wanted my engine center and not lop sided or off center and ive had no chain problems or frame problems from cutting and drilling frame but this bike is just temp for engine breakin and i will replace bike for a better one when i have the money and wont cut or drill new bike.

    heres a question: will these engines heat up from using more or less oil?
     
    #28 Cabinfever1977, Apr 17, 2009
    Last edited: Apr 17, 2009
  9. Goat Herder

    Goat Herder Gutter Rider

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    Sounds like time to upgrade to a slant head! Zoom bicycles had them for a while.
     
  10. ratty

    ratty New Member

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    I agree 100% I am new to this hobby and not familiar with HT engines but have experience with many other two strokers.
     
  11. hartungej

    hartungej New Member

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    I was initially told to run 50:1 semi-synthetic in my Grubee. I do run full throttle for about 1/2-3/4 of my 7 mile commute. Burned the engine out after about a month! She locked up and left me hitching a ride! Ambient temperature was probable about 80 degrees.
     
  12. The Busted Nut

    The Busted Nut New Member

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    I just run lucas oil 25:1 and wot all day! Love that Lucas! :D
     
  13. wayne z

    wayne z New Member

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    Sometimes(often) these engines crap out regardless of fuel/oil mixture
    50-1 dino oil works perfect to keep the UL airplanes from crashing, should be oK for a bikemotor.
     
    #33 wayne z, Aug 7, 2011
    Last edited: Aug 7, 2011
  14. bob loblaw

    bob loblaw New Member

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    hi guys. i have a starfire g4 66cc that is well broke in and very dependable. it's longevity being priority 1, how many oz of oil per 1 gallon of gas should i use? a little overkill is ok with me. the owners manual recommends 25:1 after break in. would this b sufficient for the arizona heat and if so, does 25:1 equal 2.56 oz oil to1 gal gas?
     
    #34 bob loblaw, Aug 8, 2011
    Last edited: Aug 8, 2011

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