Build 2 China Girl Motorized Bicycle Mongoose Beast

Discussion in 'Motorized Bicycle General Discussion' started by Krealitygroup, Aug 16, 2013.

  1. Krealitygroup

    Krealitygroup New Member

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    Hey There All,

    Ok Ok.. I saw the mongoose beast.. I searched for anyone who would dare put a motor on it. and no one did.. CCC i believe is working on one. I want to see if a hopped up chinagirl can work on it. with no cutting of the frame,in and no stretching If it does great, if not, it's going on my 2nd diamondback so no worries.

    I'll pick up the bike early next week if all goes well..

    Per you guys info, I'll be changing out the tires, crank, handles, and seat upfront.. and adding a 2nd muffler. Want it to be as quiet as it can be. With work and school, I should knock this out in a week to two..trk
     
  2. Moto

    Moto Member

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    Re: Build 2 China Girl Mongoose Beast

    I can tell you that youll probably have to custom weld a mounting plate that shifts the motor to the right in order for the chain line to work. Sounds like an awesome project!
     
  3. Krealitygroup

    Krealitygroup New Member

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    Re: Build 2 China Girl Mongoose Beast

    Hey moto. You're right. I was looking at the Surley Pugsley, and how they did the frame with everything off center.. It put the tires in the right place. It's going to be fun. I called the bike shop guy who I work with, and he was like "A cheap $200 fat bike" it'll never work

    Worse thing to tell me..
     
  4. 16v4nrbrgr

    16v4nrbrgr New Member

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    Re: Build 2 China Girl Mongoose Beast

    I was interested until I looked at the overall bike and it doesn't seem roadworthy without a lot of upgrades.
     
  5. Krealitygroup

    Krealitygroup New Member

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    Re: Build 2 China Girl Mongoose Beast

    You do have to upgrade quite a bit.. It looks like it's going to be an expensive build. At least 1500 for me.

    I believe I need:
    New Cranks
    Upgradged Chains,
    Skyhawk Kit
    New Surly Tires/Rims
    Fabrication for Sproket..

    I dunno.. I want to do it. But It's gotta survive 300 mile trips one way..

    What are some more durable fat bikes that are not as expensive as the Surly's
     
  6. maniac57

    maniac57 Old, Fat, and still faster than you

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    Re: Build 2 China Girl Mongoose Beast

    I was thinking a engine mounting plate like the schwinn choppers use that offsets the drive enough to fit. Simply weld the plate in the V.
    Then it's just a matter of bending the cranks to clear the offset.
    My main concern is carb clearance without frame mods.
    I'm waiting for someone here to do one so I can learn painlessly...
     
  7. Krealitygroup

    Krealitygroup New Member

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    Re: Build 2 China Girl Mongoose Beast

    Hey Maniac./All. What would be a good basic welder. I'm on a Harbor Freight Budget.
    I've never welded before but I can read, so I can learn.
     
  8. maniac57

    maniac57 Old, Fat, and still faster than you

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    Re: Build 2 China Girl Mongoose Beast

    The little flux core mig from HF is decent enough to learn and build with and the price is right.
    I'm experienced so I prefer the stick buzzbox, but the fluxcore is easier to get decent welds with. Stick needs more technique to get good welds with a small 110ac welder.
    The gas shielded mig is even better, but costs more to buy and use. Fluxcore is a good compromise between price and ease of use.
     
  9. Krealitygroup

    Krealitygroup New Member

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    Re: Build 2 China Girl Mongoose Beast

    Thanks so much.
    So I did a quick search between Northern Tool and Harbor Frieght
    What's the difference between these two

    HF
    http://www.harborfreight.com/90-amp-flux-wire-welder-68887-8494.html

    NT
    http://www.northerntool.com/shop/to...i_sku=628575&gclid=CKKP_e7xhbkCFSJqMgodYGwAvw

    I'm thinking leaning toward the NT because they have 1 year extra warranty. Learners break stuff :(

    They both are generally in the same price bracket (sub 200)
     
  10. 16v4nrbrgr

    16v4nrbrgr New Member

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    Re: Build 2 China Girl Mongoose Beast

    I'm interessted in seeing how it goes, and do yourself a favor and get yourself a GTAW MIG that uses gas, the results will be a lot better on bike frames.
     
  11. brokespoke

    brokespoke New Member

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    Re: Build 2 China Girl Mongoose Beast

    I too bought a mongoose beast recently with the sole intention of putting a motor on it. I have been lurking the various forums to see if and how anyone has gone about it, with little results. My question for you all is this: would a jackshaft kit work on the beast if the jackshaft part was wider? It seems to me that if I can get power to that front crank ill be set. Anyone try this yet?
     
  12. MotorBicycleRacing

    MotorBicycleRacing Active Member

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    Re: Build 2 China Girl Mongoose Beast

    I vaguely remember seeing a pic of a China Girl in that Mongoose and
    they cut the seat tube out so the motor would fit.

    Please post a pic of your goose with a 66 cc motor in the frame?
    thanks
     
  13. felix2

    felix2 New Member

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    Re: Build 2 China Girl Mongoose Beast

    working on one now, its gonna be a tight fit...lol
     
  14. TonyMan246

    TonyMan246 New Member

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    Re: Build 2 China Girl Mongoose Beast

    So have you made any progress? I just bought a best solely for installing a motor. Do you have any pics yet?
     
  15. runnermike

    runnermike New Member

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  16. MotorBicycleRacing

    MotorBicycleRacing Active Member

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    We are talking about the super fat tired bike sold by Walmart that has 26" wheels.
    Has a really small area on the V frame.

    The 32"er you link to is another animal.
     
    #16 MotorBicycleRacing, Oct 11, 2013
    Last edited: Oct 11, 2013
  17. runnermike

    runnermike New Member

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    Re: Build 2 China Girl Mongoose Beast

    Oh my bad.....I had just read the thread I posted before I read this one....lol
     
  18. felix2

    felix2 New Member

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    Re: Build 2 China Girl Mongoose Beast

    [​IMG]

    Here's mine, been cruising around town a bunch. Lots of looks and attention and people asking Wtf...

    Noticed this is an older thread. But if you're still thinking about doing this build, its worth it for the fun
     
    #18 felix2, Oct 13, 2013
    Last edited: Oct 14, 2013

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