DIY the cheap and ugly way.

Discussion in 'DIY Home Built Motorized Bicycle (non kit)' started by DODO101, May 14, 2012.

  1. DODO101

    DODO101 New Member

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    I have some pictures of the built to post, but let's start with a video of my near to finish first homemade friction cruiser.

    http://youtu.be/5CSMhtLCyVs

    Let me know what you think!

    cvlt1
     
  2. pocdragon

    pocdragon New Member

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    looks good and simple from the video, thats what i like to see!

    it looks like you dont have a clutch setup, and the roller is always enguaged.

    i suggest a lift-clutch to pick the engine off the wheel so you can coast and idle the engine,

    also, i didnt see a throttle. or was it just me?



    well done
    welcome to the boards
     
  3. DODO101

    DODO101 New Member

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    You are correct. I'm having a hard time with the throttle setup. I found temporary solution, but it's not perfect.
    As for the clutch, well I don't have any. I'm not to sure how to keep the pressure downward and also being able to lift the engine at the same time...
    I'm having some issues with the door hinge, it's not perfectly tight so the engine get's pushed against the tire...
     
  4. DODO101

    DODO101 New Member

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    Donor engine.
    Poulan Pro DVM200VS 25cc 200MPH
    [​IMG]

    First engine I take apart.
    [​IMG]

    Took the carb apart and cleaned it.
    [​IMG]

    Trimmed the plastic air filter.
    [​IMG]
    [​IMG]
     
  5. DODO101

    DODO101 New Member

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    Improvised roller.
    [​IMG]
    [​IMG]

    The bike itself - old rusty beach cruiser.
    [​IMG]

    The mount in development.
    [​IMG]

    I used a 10" Zinc stair angle to make the engine mount.
    [​IMG]
     
  6. DODO101

    DODO101 New Member

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    the roller on the wheel.
    [​IMG]

    Tension.
    [​IMG]

    [​IMG]

    Temporary throttle setup.
    [​IMG]

    [​IMG]
     
  7. DODO101

    DODO101 New Member

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    update:

    It goes up to 20MPH (GPS tested)
    I still need to find a way for a clutch, or at least a way to lift and push down the whole mount on the tire to increase/decrease friction...

    Painted the whole thing with some high heat paint resistant.
    [​IMG]

    Painted the whole bike :p
    [​IMG]
     
    #7 DODO101, Jun 11, 2012
    Last edited: Jun 13, 2012
  8. BustedKnuckles

    BustedKnuckles New Member

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    Replace the baling wire with a strong bungie cord to maintain pressure against the tire and then attach a rod to the hinge that can be latched to the frame to pivot or disengage the engine contact. This concept seem to work for that bumblebeee bicycle engine guy and if you do a search you'll find pictures of what I'm saying.
     
  9. pocdragon

    pocdragon New Member

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    i agree with knuckles. get a spring and turnbuckle, or a bungee to pull the motor down

    throttles arent too hard dude. get an oversized brake wire (like 5-6 foot)

    and use a brake lever you dont need a twist grip or anything
    when you mount the sheath make sure it has enough slack to allow the motor to pivot witout the throttle pulling by itself (scary stuff)

    here is my clutch on a similar build

    [​IMG]
     
  10. DODO101

    DODO101 New Member

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    Thank you all for your replies...

    a little update, this happened the other day while riding the bike.

    [​IMG]

    so I didn't "play" that much with the bike.
    I did put a bungee cord and it seems to help to create some friction.
    that clutch system looks interesting.... I will look into it.

    on a side note, a friend found another leaf blower (exactly the same one) in the trash and gave it to me.
     
  11. tooljunkie

    tooljunkie Member

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    fall down go boom?
    i came close the other day,i was flying in the driveway,wife was heading out,managed to just miss,wiped dirt off fender with my knee.
    im looking at building a friction drive too.
    got 3 tanaka pumps coming soon.
     
  12. cmanns

    cmanns New Member

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    Dang 20mph not bad.
     

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