Real cheap U-make it single wheel trailer

Discussion in 'Bicycle Trailers' started by professor, Apr 27, 2010.

  1. professor

    professor Active Member

    I wanted a trailer for an e-bike experiment, and after searching here, decided on a one wheeler.
    Then thought of the kick scooter behind the house that the grandkids don't use + some welding and a steering U joint from the inventory. Works great, I would say the capacity for all practicality is around 30 pounds (I had 2 car batteries in there powering the e-bike and it was definitely too much tail wagging feeling on the bike- also lifted the front of the bike, just sitting there).
    The U joint needs to have one of the cross joints parallel to the ground- you can't weld it on any old way. The joint gives turning and up/down movement while keeping the trailer at the same lean angle (or straight) as the bike.
    I removed the plastic step pad, bolted on the plastic box, put a small innertube (partially filled 12 inch) in the box, then put a plywood "Floor" in it = air ride.

    Attached Files:

  2. Nice professor,Your wisdom never ceases to amaze me my friend.Gonna build me one.:idea:
  3. Wheres my dog

    Wheres my dog New Member

    Nice (heavy duty) work you did there...

    VERY innovative!
  4. V 35

    V 35 Member

    I like it, but feel the U joint is overkill [ and overweight ] Wouldn't a simple pintle setup work just as well ? I love the rack, please post a larger picture, thanks for a unique problem solver.
  5. Fabian

    Fabian Well-Known Member

    Nothing like a Uni-wheel trailer to get the job done. Conventional trailers are great until they hit a decent pothole; then promptly over turn and land on their roof.
  6. bluegoatwoods

    bluegoatwoods Well-Known Member

    I'll testify!

    A flipped trailer has happened to me a time or two.

    I do like the professor's design. That one looks like it's not quite stout enough for the jobs that I would give it.

    But it's an idea that's worth looking into.......
  7. Fabian

    Fabian Well-Known Member

    bluegoatwoods, i'll send you a PM of my Uni-wheel trailer - if that design isn't stout enough for your requirements we need to invent a new category for stoutness!
  8. Lunardog

    Lunardog Member

    Very cool!!! I like the slim footprint making it easy to pull on narrow road aprons and such. Getting tired of limiting my shopping jaunts to town to what I can fit in my backpack and panniers. Well done.
  9. wheelbender6

    wheelbender6 Well-Known Member

    Functional and looks good. That is a difficult thing to accomplish.