XYZBicycle - South Bay of SoCal

Discussion in 'Introduce Yourself' started by XYZBicycle, May 4, 2010.

  1. XYZBicycle

    XYZBicycle New Member

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    About Me:I’m not really new, but I have a new board name, and I just finished building my first bike last week. Primary purpose for wanting to build a Motorbicycle – When I was a kid, I wanted to mount an old lawn mower engine on bicycle – Now I’ve done it!

    The Kit & the Bicycle
    I bought a 2 stroke “China Doll” kit from BoyGoFast on eBay over a year ago. Unfortunately, the engine didn’t fit inside the Mountain Bike I had intended as a donor bicycle, so I went on Craigslist and bought a used Beach Cruiser for $60. Then I broke an engine mount bolt off while trying to replace it with all thread as recommended on a FAQ on these boards. Then my wife had a baby, then we moved, so the kit sat in a plastic storage bin, and I sold the beach cruiser.
    Back on the job a year later, looking at Craigslist again, I found a small company selling beach cruisers for $100 right here in my neighborhood.

    Broken Bolt:
    I guess I could have taken it to a machine shop, but from what I understand, this is a fairly common occurrence, so I resolved to figure out how to do it myself.
    I broke at least 5 drill bits in the process and snapped 2 bolt extractors. What finally did the trick, was heating up the metal with a Benz-o-Matic torch I had for doing plumbing work, and used an engraving bit on my Dremel tool that I had for building model airplanes. I am also now the proud new owner of a small Craftsman tap & die set.

    Grinding Therapy
    After spending at least 4 sessions in the garage getting the engine mount fixed, I had to grind out the sprocket to fit on the rear hub, then I had to grind down a retainer cap to fit inside the sprocket. After all of that was settled, I put the brake arm back on, but now the brake arm didn’t match up to the frame.
    Taking my trusty Benz-o-Matic torch, I clamped down the brake arm to my work bench with a pipe wrench (I don’t have a vise anymore), heated it up, and bent it this way and that with a 2 pound sledge hammer.

    The Build
    The rest of the build went fairly smoothly. My top tube was larger than the mounting brackets for the gas tank could handle. I spent a session in the garage one evening trying to fabricate some metal brackets, but just wound up with some seriously mangled metal at the end of the evening. Then I went down to the auto parts store to see what I could find, and came out with some flexible muffler hanger metal.
    At some point, I went back to the plastic storage bin to see what other parts needed to be put on, and there weren’t any – I was done!

    Test Rides

    The first couple of test rides were really hard. I couldn’t get the engine to turn over more than a few times if I wasn’t pedaling, and I could only pedal so far with the clutch out. Finally, I found a paved path in a park that went downhill, and just kept going up and down it until it developed enough power that I could keep the engine going on flat ground.

    That Look

    Even though I live in SoCal, it is amazing at the looks I have been getting driving around my neighborhood. For the most part – women scowl at the noise, and men grin from ear to ear.

    It's a fairly routine build as far as motorbicycles go, but I figure you build your first one to know what you want in your second one. I received several compliments on it when I rode it to a pickup game of soccer in the park last Sunday, and last night I was just sitting in the garage smiling and looking at it while listening to the radio.

    It's like I'm 16 again, and just got my first car.
     

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    #1 XYZBicycle, May 4, 2010
    Last edited: May 4, 2010
  2. Dave31

    Dave31 Moderator
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    Welcome xyz, glad you joined us.
     
  3. Paul Browning

    Paul Browning New Member

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    Check out the bike my neighbor just gave me here in Manhattan Beach. Can't wait to get the restore going. It hasn't been started in a few years and needs to be completely restored. Here motor was strong when last ridden. And tips? New to motobikes.
     
  4. kipharley

    kipharley New Member

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    Welcome xyz.Two questions.(1)Do you know that your front fender is backwards?(2)Doe's that bike run with the carb sideways like that? Kip.
    [email protected]
     
  5. Goat Herder

    Goat Herder Gutter Rider

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    Welcome to the forum.
     

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