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  1. #1
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    Cool 99cc Predator engine upgrade

    I am upgrading my engine to a 99cc

    it will be equiped with a low-rpm Q-Matic gear reduction drive using an AX26 belt

    a couple of pics to start out



    1st is a pic of the box from Harbor Feight
    http://www.harborfreight.com/predato...nia-68124.html


    2nd is the variable-size pulley (2.1" - 3.1") from Grainger
    http://www.grainger.com/Grainger/CON...t-Pulley-1X448
    Bill
    EZ Motorbike Dealer - Fountain Hills, AZ
    azgrampa@gmail.com
    www.ezmotorbike.com
    EZ Motorbike of Fountain Hills


  2. #2
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    first I stripped the engine of anything not needed
    gas tank, exhaust, governer, throttle parts,,,etc


    I made a linkage setup similar to Mac's, except,
    not having a vice, I used some flat steel and an angle bracket


    I used a piece of aluminum, bolted to the top and a spring from the original throttle to move the butterfly lever
    Bill
    EZ Motorbike Dealer - Fountain Hills, AZ
    azgrampa@gmail.com
    www.ezmotorbike.com
    EZ Motorbike of Fountain Hills


  3. #3
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    next, I cut the weld holding the muffler to the exhaust header,,,
    I plan on running my flex-exhaust off of it untill I can get a new header fabbed


    more to come as I get further along into this
    Bill
    EZ Motorbike Dealer - Fountain Hills, AZ
    azgrampa@gmail.com
    www.ezmotorbike.com
    EZ Motorbike of Fountain Hills


  4. #4
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    Will this be a race bike? I was told the law is 49cc and under in AZ for use on the street???

  5. #5
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    yes,,,it is over the limit
    Bill
    EZ Motorbike Dealer - Fountain Hills, AZ
    azgrampa@gmail.com
    www.ezmotorbike.com
    EZ Motorbike of Fountain Hills


  6. #6
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    Quote Originally Posted by azbill View Post
    yes,,,it is over the limit
    So I guess that means it will be used on public streets? Asking cause I'm thinking about spending some time in AZ. I can see a few cc's over the limit not being an issue but that engine is double. Just wondering your take on how things work there.

  7. #7
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    I have been riding in my little town for about 6 yrs or so ,,,
    the local 'boys' all know me and don't even look my way anymore
    it helps that I am a very responsible rider (hand signals, full stops,,,etc)

    my bike is my personal transportation as well as my granddaughters' private 'limo'
    (I live with my daughter and watch the girls while mom n dad are working )
    they are growing and the trailer ain't no lightweight either,,,
    that is the main reason for upping the engine

    this is why I do what I do

    Last edited by azbill; 02-01-2012 at 01:26 PM.
    Bill
    EZ Motorbike Dealer - Fountain Hills, AZ
    azgrampa@gmail.com
    www.ezmotorbike.com
    EZ Motorbike of Fountain Hills


  8. #8
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    I guess the cops here have better things to do. I have ridden my bike+6.5 push trailer to work more times than I can count. Have passed cops on several occasions, most didnt even look at me, one even laughed and waved.

    Looking forward to seeing your finished 99cc bike!

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