Advertise on Bikeforums.net



User Tag List

Results 1 to 6 of 6
  1. #1
    Senior Member jawnn's Avatar
    Join Date
    Aug 2004
    Posts
    279
    Mentioned
    0 Post(s)
    Tagged
    0 Thread(s)

    Lightbulb Utility Commuter Bicycle

    I could not find a bicycle at any price to do what I needed. Easy dismount; crank 5 inches forward to sit up straight; and a front rack that can handle 40 or more pounds without effecting the steering.

    I had to design one and build it.
    It took much more time and money that I ever thought possible. And I forgot to add a rear rack onto the frame so it could hold more weight than the aluminum racks.

    http://commutercycling.blogspot.com/...struction.html

    The only thing that comes close is the Worksman Lowgravity bike and it requires a very expensive hub gear and possible Schlumpf crank set to get as wide range of gears as a mountain bike drive train.

    I just wish some company like Sun Bicycles would start making bicycles like this. Or at least a custom frame builder could do it.

    new-bike.jpg
    Last edited by jawnn; 09-29-12 at 04:12 PM.
    https://www.facebook.com/utilitybikeproject

  2. #2
    Transportation Cyclist turbo1889's Avatar
    Join Date
    Aug 2011
    Location
    Montana U.S.A.
    My Bikes
    Too many to list, some I built myself including the frame. I "do" ~ Human-Only-Pedal-Powered-Cycles, Human-Electric-Hybrid-Cycles, Human-IC-Hybrid-Cycles, and one Human-IC-Electric-3way-Hybrid-Cycle
    Posts
    1,170
    Mentioned
    7 Post(s)
    Tagged
    0 Thread(s)
    That is a beautiful build you have there. I agree that there is indeed a market for an "urban light-cargo/commuter" a bike that can haul and that will also fit on bus bike rack (a problem with many cargo bikes due to their longer wheel base). Running double 20" BMX sizes wheels front and rear with a frame built to fit a full size adult in an upright riding position with mountain bike gearing and setting the top frame bar just barely over the top of the tires height and extending it out the front and back over the top of both the front and rear wheels as a strong mounting point for racks or baskets that is part of the frame is the best I have seen so far along those lines:

    http://james.architectureburger.com/cycle/cargo.html

    I like your design as well but it doesn't have the smaller wheel in the rear as well to keep the cargo in the rear at a lower center of gravity as well.

  3. #3
    Senior Member
    Join Date
    Mar 2007
    Location
    Yokohama, Japan
    My Bikes
    Dahon Curve SL, Pacific Carryme, Yuba Mundo, Louis Garneau MV1
    Posts
    426
    Mentioned
    0 Post(s)
    Tagged
    0 Thread(s)
    Very nice. Reminds me of the Soma Tradesman and their "Pick Up Artist".

    http://somafab.blogspot.jp/2011/09/m...bike-news.html


  4. #4
    Senior Member
    Join Date
    Oct 2007
    Posts
    318
    Mentioned
    0 Post(s)
    Tagged
    0 Thread(s)
    Nice work Jawnn!

    Do you have any more photos, especially of the work in progress? It looks like you lengthened the steerer on a BMX fork, I am especially curious about how that was done.
    Cars made me fat. Now cars want to make me flat.

  5. #5
    Senior Member jawnn's Avatar
    Join Date
    Aug 2004
    Posts
    279
    Mentioned
    0 Post(s)
    Tagged
    0 Thread(s)
    The first thing I did was search for bikes that would work for me. Looks like more on this thread.

    This is the search results
    http://commutercycling.blogspot.com/...lity-bike.html


    The rear triangle is from a Chinese mtb and holds a 24" wheel now that I had new drop outs added. I used an old Biopace crank.

    I also designed and built the handle bars, using 7/8th" airplane tubing from Wicks aircraft supply.

    The front fork was a simple trick of holding the extension on an angle iron with the cut off steer tube.

    http://commutercycling.blogspot.com/...struction.html (no photos of that operation.)

    It was really hard to keep the front and rear aligned while constructing.


    The links on this forums do not work very well, try just cruzing my blog.
    Last edited by jawnn; 10-01-12 at 01:29 PM. Reason: typos
    https://www.facebook.com/utilitybikeproject

  6. #6
    Senior Member jawnn's Avatar
    Join Date
    Aug 2004
    Posts
    279
    Mentioned
    0 Post(s)
    Tagged
    0 Thread(s)
    This looks like a really good bike. Too bad I did not see it before building my bike.

    http://james.architectureburger.com/cycle/cargo.html
    Last edited by jawnn; 10-01-12 at 01:18 PM.
    https://www.facebook.com/utilitybikeproject

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
  •