Newb to the forum..newb to motor-bicycles.

Discussion in 'Introduce Yourself' started by Litlerob, Jun 30, 2017.

  1. Litlerob

    Litlerob New Member

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    Hello all, I just had a friend drop off a Motorized bicycle 'cause I'm one of those guys, even though I have never touched one or thought about it-before now. This is a picture of a very similar bike, so I'm assuming mine is a Schwinn too. In much rougher condition. Just a pic I fished off the Internet.

    I am a CNC machinist by trade, I am not afraid or intimidated by the prospect of a rebuild, by any stretch of the imagination. Usually I'm building parts for aircraft, weapons systems, medical devices and whatever else they say "make one of these thingies". But before I start, a couple/few questions;

    1. What is the cooler way to say "motor-bicycle", don't want to start out with the wrong terminology. :)
    2. A guess at the vintage of this bike?
    3. I think the motor is a 55cc, but with no badges and without cracking it open.....?
    4. Resources for parts and opinions on availability?

    5. All in all, is it worth it?

    Thanks fellas/gal's, Robert



    [​IMG]
     
    Dave31 likes this.
  2. 5-7HEAVEN

    5-7HEAVEN Well-Known Member

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    Welcome to the club, Litlerob!

    I refer to my ride as a motorized bike.

    Motor bicycle, MB, no big deal on names.

    Available parts are plentiful and inexpensive. However, many are low-quality, made in China, especially your engine.

    With your skills, you can make quality equipment for your bike.
    let me list what you, as a machinist, can improve:

    a better chain tensioner that won't fall into the spokes;
    a CNC rear sprocket mount to better attach to your wheel;
    a custom in-frame gas tank for your next cruiser bike;
    CNC mounts for your engine;
    a scratch-built complete AFFORDABLE v-twin engine for board track racers;

    The last item is "The Holy Grail."

    All in all worth it?

    Heck yes! It's the fun factor and a cheap hobby and form of transportation.
     
  3. Litlerob

    Litlerob New Member

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    Thanks 5-7heaven, is the motor a 55cc? Nomenclature?

    Seems someone really wants a custom built (affordable) v-twin (c) we'll see how far this rabbit hole leads, okay.

    In order to search the interwebs, I need some keywords to use, and have no idea where to start. IE 1982 Schwinn motor bicycle, know what I mean?

    R
     
  4. 5-7HEAVEN

    5-7HEAVEN Well-Known Member

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    R,

    I'm not into the "China Girl" or Happy Time" engines, nicknames for what you have.

    I believe they are 49cc engines, as well as 66-80cc ones.

    Actually, I have a Tanaka engined/mid-framed bicycle. My project is a two pocket bike engines, mounted middle of a bicycle frame. Both bikes transmit power thru the bicycle's 8-speed cassette.

    My 12-mile round trip rides to work.

    Key words to do a Google or Craigslist search is "motorized bicycle".

    You'll have millions of results.
     
    #4 5-7HEAVEN, Jun 30, 2017
    Last edited: Jun 30, 2017
  5. Vipboykz

    Vipboykz New Member

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    Available parts are plentiful and inexpensive. However, many are low-quality, made in China, especially your engine.
     

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