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  • Staying on track

    Here’s a quick look at the front axle connection to the chassis and the steering geometry. Front Axle CAD Detail The axle tube is a single piece of stock aluminium tube, 2 inch outer diameter (50.8mm), with 1.63mm thick walls in 6061-T6. All that is needed to change the tube...

  • Structural Epoxies - sticking it together

    Almost all metal cycle frames have welded joints, because welding is a strong and simple jointing technique for metal. (I have seen an aluminium framed trike constructing with no welding, but it’s definitely the exception) However welding is a skill, and not every home builder will have the experience necessary...

  • On Home-Build Velomobiles

    A discussion on ‘BROL about what is needed to expand the velomobile market raised some interesting avenues to explore, including the suggestion of a low-cost, home-built kit that doesn’t need any moulds made, hundreds of hours of finishing and smothing or fibreglass layup, bagging and curing. A couple of years...

  • New Year, Perihelion, Maker Faire UK

    Happy New year for 2011, which I hope (ironically) will be the year of the Human Powered Vehicle. I’m going to ignore all of the previous 200+ years of use and technical development, the millions of bicycle riders around the world, the incredible HPV world records and the 100-or-so years...

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    And it is untitled…

  • Merry Christmas

    This week’s snow in the UK is a gift for me, because I’m a dedicated snow driver (…), but I haven’t seen any cyclists out. I hope it snows next year though, that way I can get to go out in an Atomic Duck. I hope it will be as...

  • Development Kits

    I mentioned a development kit in passing in last week’s post (Parts Database) alongside prototyping. I want to get the chassis designs out and available to anyone who is interested in an early build. If you’d like to use Atomic Duck as as basis for your own vehicle, or want...

  • Parts Database

    As design work continues towards a prototype, which will be simultaneously available as a development kit, the increasing number of parts is beginning to need an planned method of organisation; and one that can be used indefinitely, even as parts change and are refined. As I want to make the...

  • Choosing Open Source

    I’ve been asked a lot by friends and family about if I have patented or protected my velomobile design in some way to stop “just anyone” coming along, making a copy and selling their own; and thus (so the story goes) stealing potential sales of my product. I tend to...

  • Self-Jigging Chassis

    One of the design criteria for Atomic Duck is: to be easily manufacturable, in a workshop with minimal specialist tools. As a result, the chassis parts are made from stock aluminium tube sizes and flat sheet. But the components construction is only part of the story, an Atomic Duck also...

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