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  1. #1
    Electrical Hazard
    Join Date
    Oct 2005
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    Manhattan / Vancouver
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    a bunch.
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    making my own trailer..

    So I'm planning on taking a short bicycle tour up Vancouver island this summer, and I think I'll need a trailer.

    My plans so far are:

    -single 20" BMX wheel at the back.
    -90 "L" shaped aluminum extrusion for the frame
    -elevated dropouts to keep the center of gravity low
    -big rubbermaid bin bolted to the frame
    -curved boom that goes up to the seat post
    -trail-a-bike style U joint and seatpost clamp

    Basically, I plan on jacking the design from 'Tony'strailers' in the hopes of making my own for less than $100.

    Now, my main questions are on the hitch part..
    I've seen replacement parts for Trailabike hitches on Sheldon brown, but all that hardware would run me $57 USD plus shipping/taxes/duty. Similarly, buying a used trailabike in town costs about $100.

    Does anyone know of any good small U-joints for cheaper?
    I'm thinking about hitting a snowblower repair shop to see if they have anything.

    As well, do any of you have any ideas for a custom clamp? I'm thinking about cannabalizing a mountain bike stem from my local bike co-op.

    I'd appreciate any creative input here =D
    ...and if you've ever made a single wheeled trailer, post pics here!

    Thanks,

  2. #2
    Mike
    Join Date
    May 2006
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    Cayman Islands
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    Cignal Silverado MTB
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    Does anyone know of any good small U-joints for cheaper?
    I'm thinking about hitting a snowblower repair shop to see if they have anything.
    Try a wrecking yard and find a steering shaft. You can usually get them for a very nominal charge as they very seldon sell. A tilt steering unit mean the joint has never seen weather and are already attached to small diameter shaft.

  3. #3
    Scott n4zou's Avatar
    Join Date
    Jun 2006
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    Drop by someplace that sells cheap tools like Big Lots and look for a universal joint used with a socket set. One side of it will be female and the other side male so you can put it in line with a socket and ratchet so you can get into tight places to remove a bolt or nut. 1/2" drive will be plenty strong; 3/4" drive would be better. Simply weld it into the tubing. Your local welding shop will know what your doing.

    A less expensive option might be to purchase a used Childs trailer bike. That’s one of those things with one wheel, pedals, handlebar, and a seat post clamp. The rig clamps to the seat post and the child mounts the trailer bike and can be a stoker and help carry his weight like a tandem bike.
    http://www.whycycle.co.uk/children-tagalong.htm
    Simply remove the BB, chain, seat, and handlebar and mount baskets pannier style to the frame. These trailer bikes can usually be found on ebay or thrift stores when the child outgrows it. I found one at a yard sale missing the chain for $1. I purchased a BD24-10 electric hub motor kit for a 20" wheel and installed it and made racks for the batteries so any bicycle could become an electric bicycle.
    http://www.werelectrified.com/unibikekit.html

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