interesting … DIY-cargo bike

OpenBikeWorks is developing a nice cargo-bike.  It got my attention, because their aim is to build the bike without any welding needed !    Every average sucker (as I am) can drill holes and play with bolts and nuts, just no welding please because that requires craftsmanship gained in many years.   

I expect that “Do-It-Yourself” will be more and more common in the near future, due to the financial crisis. 

I like the way they were inspired by an old Ner A Car motorcycle from 1925.

There is a video which shows it after restoration ;

I’m curious if their plans for the steering will work out properly …

I hope the frame will be strong enough to carry 100 kg , as the Bullitt  already has  proven.

Published by wim harwig

too old to die young, but still making love and not war

3 thoughts on “interesting … DIY-cargo bike

  1. I hope this man has a good insurance and big lock on is shed now it’s on Youtube. The near-a-car is a very very rare and expensive bike. I’ve seen only one in France in my life. Specially in this good and working state.
    In the film he mentioned only 5 in Holland. It’s more likely in the hole world.
    Even in the (spot) welded frame of the Near-a-car with rectangular tubes you can see how weak its is. In about the same time there was a Danisch motorbike called Nimbus It’s made of plate steel and bolded together. You can see the frame shaken and the steering was horrible when the motor is running. I drove one in Norway many years ago.

    In the design of the cargo bike I miss the triangular construction. When the corner joints are bolded together there must be a overlap with several bolds. I think the bike will hold but is not strong and stable. The steering will be bad. Feeling elastic I think. On the long term it will even become more instable.
    To ovoid that it must be plated at least in the corners with revits.
    In my opinion the base must be a constructed like a pilon or bridge like frame. You can even replace some iron bars for steel wire(!) to save weight.
    The hub controller must be tailor made. That’s is no DYW project if welding is already a problem……


  2. Thanks for your comment Theo …
    Every invention starts with a “stupid plan” and some “weird guys” who just think their own “strange way”. It just takes many mistakes to get only one invention. Thanks to the internet, nowadays we are able to get informed of all the “silly projects” that are enthusiastic started up .
    I like to follow this project to see if it becomes succesful or not. I’m sure that other “weird guys” will be inspired by this experiment, even if it doesn’t seem to work.
    It all started with the invention of the wheel….


  3. Hi, thanks for reblogging and the comments. We don’t mind being labled as a bit wacky, it only makes it more fun when we hopefully prove the critics wrong. With regard to the points being made:
    1. Construction. The bolt-together method has be proven solid by N55 and their DIY recumbents. As to triangulation, I am an architecture student and my first thought was to triangulate like hell. But, again the N55 bikes show that the Czech Hedgehog joints are sufficient. As to the need for the frame to work like a bridge, it does. The panels on the sides are part of the construction and substitute triangulation.
    2. Steering. The ner-a-car is renowned for being a very stable ride, and the push-rod principle has a long history of working fine, exemplified in the Long John and the Bullitt.
    The hub is definately our biggest challenge, but we have some ideas about how to do it, even without welding. Time will show if the ideas are also clever when they hit reality:)

    Again, thanks for the attention. You are very welcome to look at the blog and drop advice and questions.


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