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  1. #1
    Rat Patrol Chicago
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    Fleet of pedal-powered bumper cars

    Basically I took AZ's spinbike design and added bumpers. The result? Bumper cars that you can ride anywhere. These are brutal and an absolute hit. I presented them at the Corinbank festival where I am in New South Wales but I hope to turn it into a legitimate festival event. We've already started to think up sports you can play: Last one bumped out of a circle, hockey with a shopping cart puck, etc etc.










    Remove the "t" in the filename to get a closer look. I'll get some video up soon.

  2. #2
    Senior Member Sledbikes's Avatar
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    thats coool
    riding and pimpin again

  3. #3
    Lanky Lass East Hill's Avatar
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    Did you make all of these? Is any one design better than the others? They all look like a blast to ride.

    East Hill
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    TRY EMPATHY & HAVE LOVE IN YOUR HEART, PERHAPS I'LL SEE YOU ON THE ROAD...

  4. #4
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    Rad! The possibilities for injuring yourself while laughing hysterically are endless. Nice work.
    "Inappropriate signature removed by forum administrator"

  5. #5
    Pedaled too far. Artkansas's Avatar
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    Great idea! Every fair in Mexico and half the small fairs in the US. will want them. They look fun.

    Or use them as the focus for corporate teamwork training.
    "He who serves all, best serves himself" Jack London

    Quote Originally Posted by Bjforrestal View Post
    I don't care if you are on a unicycle, as long as you're not using a motor to get places you get props from me. We're here to support each other. Share ideas, and motivate one another to actually keep doing it.

  6. #6
    Senior Member los buenos's Avatar
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    thats been on my to-do list forever good job, i love the tires for bumpers, very staight forward is ther any difference what-so-ever between AZ's spintrike and these besides the bumpers? my spintrike was impossible to ride for anydistance without spinning too much to get where i was goin, very frustrating! i have a fenced in area of cement right down my road that is perfect
    proudly, Brimley, Michigan's only resident freak-biker

  7. #7
    Senior Member los buenos's Avatar
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    the dark green one looks like it takes some height!
    i love how the principle to this bike is to bludgeon the other person to death with the momentum of your own bodyweight!
    proudly, Brimley, Michigan's only resident freak-biker

  8. #8
    Rat Patrol Chicago
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    I made them all and they are the result of some deliberate experimentation. The yellow one rides best- the small wheel gives you more clearance and torque, and you need lots of room around the bumper to be able to counter the spins.

    They are built for four different heights of people so everyone could ride.

    You can make the bike favor a straight line by a) more rake in the head tube, b) castering the front wheel (like in the green one), or c) tilting the rear casters slightly back. But this has the effect of giving the bike a top speed, when the casters hit the death-wobble point. But yeah, you aren't going anywhere on these. They're almost exactly AZ's design.

  9. #9
    Senior Member los buenos's Avatar
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    Quote Originally Posted by Johnny Payphone View Post
    You can make the bike favor a straight line by castering the front wheel (like in the green one)
    you mean castering as in giving it a way reverse rake?
    proudly, Brimley, Michigan's only resident freak-biker

  10. #10
    Senior Member los buenos's Avatar
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    my problem with spintrikes is they throw the riders head around, i think they need headrests to make it easier to keep te riders head upright, one of the reson i removed the caster wheels and put real wheels on mine
    proudly, Brimley, Michigan's only resident freak-biker

  11. #11
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    hey buenos! Where you at in the UP? I'm from Iron River!
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  12. #12
    Lanky Lass East Hill's Avatar
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    Quote Originally Posted by Johnny Payphone View Post
    I made them all and they are the result of some deliberate experimentation. The yellow one rides best- the small wheel gives you more clearance and torque, and you need lots of room around the bumper to be able to counter the spins.
    I'm giving the yellow one style points for having matching seat and back, too .

    East Hill
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    TRY EMPATHY & HAVE LOVE IN YOUR HEART, PERHAPS I'LL SEE YOU ON THE ROAD...

  13. #13
    I STILL miss East Hill :) Rollfast's Avatar
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    Quote Originally Posted by East Hill View Post
    I'm giving the yellow one style points for having matching seat and back, too .

    East Hill
    Style definitely counts!

  14. #14
    Recumbent Trike countersTrike's Avatar
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    Excellent! And with oil @ $104.46 right now (Bloomberg); you might sell a million!

    countersTrike

  15. #15
    Senior Member los buenos's Avatar
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    Quote Originally Posted by Capn ˇFUN! View Post
    hey buenos! Where you at in the UP? I'm from Iron River!
    i'm in Brimley, a subatomic sized village by sault sainte marie
    proudly, Brimley, Michigan's only resident freak-biker

  16. #16
    Senior Member los buenos's Avatar
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    would be nice if bigwheel style wheels(with the crank right on the hub) with freewheels in the hub were easier to come by, they would be perfect for these.
    proudly, Brimley, Michigan's only resident freak-biker

  17. #17
    B-b-b-b-b-b-bicicle Rider orange leader's Avatar
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    beautiful,

    how are they on tipping towards the front. Looks like they might be able to use some caster at the front corners too. And what about a seat belt to to hold the driver back so as to prevent crotch contusions?
    Rudimentum mendum menda
    Iudicium mendiosus
    Judicium per erratum
    Judicium et erratum!

  18. #18
    Senior Member los buenos's Avatar
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    crotch contusions are 3/4 the fun!
    proudly, Brimley, Michigan's only resident freak-biker

  19. #19
    Senior Member los buenos's Avatar
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    the other 1/4 is trying to ram your freinds in such a way to give them crotch contusions!
    proudly, Brimley, Michigan's only resident freak-biker

  20. #20
    Senior Member Chris_in_Miami's Avatar
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    Quote Originally Posted by los buenos View Post
    the other 1/4 is trying to ram your freinds in such a way to give them crotch contusions!
    I'd imagine that mangled fingers also play an prominent role.

  21. #21
    Senior Member Chris_in_Miami's Avatar
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    Quote Originally Posted by los buenos View Post
    would be nice if bigwheel style wheels(with the crank right on the hub) with freewheels in the hub were easier to come by, they would be perfect for these.
    I saw a "green machine" at the flea market the other day, it has a unicycle / bigwheel drive system. And they still make them apparently.

  22. #22
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    I now know the true meaning of love... I can picture myself and a few buddies riding around like idiots bumping each other..... I like your idea of bump sumo!
    Every time I hear a car door slam, I hear a *** cock.
    about 43,000 people die from car accidents
    about 130 children die in bicycle accidents
    about 1,500 die from accidental *** shots
    about 120,000 die from medical mistake

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