Big mistake

Discussion in 'Motorized Bicycle General Discussion' started by cartisdm, Oct 14, 2008.

  1. cartisdm

    cartisdm New Member

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    I ordered one of those 49cc chinese kits off ebay. I didn't put much thought into the frame size until about ten minutes ago.

    My motor will arrive sometime tomorrow but I just looked at the frame size on my mountain bike and it's a 17in. Am I going to run into some serious mounting problems?
     
  2. LordMaximo

    LordMaximo New Member

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    It should fit real snugly.............there are ways to adapt any engine to a bike.......maybe a frame from the local thrift store is in need of customizing?:D
     
  3. Dave31

    Dave31 Moderator
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    Link...http://motorbicycling.com/f3/what-kind-bike-would-you-recommend-510.html

    At least 12.5 inches running along the seat tube from the top of the bottom bracket to the bottom of the top tube.Tubing size from 1-1.5inches on the both the seat and down tube. Plus or minus 70deg. above the bottom bracket between the down tube and the seat tube. Inner distance between pedals needs to be greater than 4.5 inches in width to clear the 4.5inch wide motor.
     
  4. cartisdm

    cartisdm New Member

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    That's good news, if all goes well I'll find out soon enough. I don't mind hitting up home depot and grabbing whatever I need to make a mount, I'm mostly concerned about it fitting in the frame (since I have no idea what to expect seeing as how I've never seen one of these motors before)
     
  5. skipu

    skipu New Member

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    yup but its doable just way more time consuming im on the same page but mines 3/4 built working out some minor clearance situations with carb reed setup
     
  6. cartisdm

    cartisdm New Member

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    I just did a quick check, I have exactly 12'' along the seat tube from bottom tube to top tube. I'm guessing I'm going to run into problems with the carburetor. Any ideas?
     
  7. deacon

    deacon minor bike philosopher

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    Wait till it comes before you build it... seriously no sense agonizing just yet...
     
  8. bravofire84

    bravofire84 New Member

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    i ran into a lil problem with my 19inch frame with the chain being to loose so i up grading to a bigger old skool frame like those ppl used to ride on in the tour de france.Yea the ones with skinny wheels.
     
  9. skipu

    skipu New Member

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    like deacon said get it then the ideas may arise possibly adapt a 90 to it stick it out the side a littlebit still i would wait you will have a clearer picture PEACE !!!!
     
  10. Dave31

    Dave31 Moderator
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    I've got 14" with less then a inch of clearence...I think that will be a very tight fit.
     
  11. cartisdm

    cartisdm New Member

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    Well I got the motor and it is indeed a tight fit. I am going to have to create a custom bracket for it since my bottom tube is very thick. The motor I can get inside the frame but I cannot get the carburetor in. I am going to get a 90 degree elbow and run it off the side, does anyone see a problem with that configuration?


    Edit: Gave up, I'm at college and don't have any tools. Taking it to my parents house this weekend and I'm going to finish the job there:)
     
    #11 cartisdm, Oct 14, 2008
    Last edited: Oct 15, 2008
  12. jerseykat1

    jerseykat1 New Member

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    no problem with that configuration just make sure there is no air leaks at your elbow, and keep it level or upward pointing. please post pics when you are done.
     

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