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Dave made this informative video on how to attach a “Weed Eater” [string trimmer] motor to a bicycle. Used bicycles and string trimmers are easy to find and very cheap to buy. You could make this project for less than $100, maybe even less than $50. The information on modifying the clutch could be very useful in making robots too!

How To: Build a Weed Eater motorized bicycle

Marc de Vinck

I’m currently working full time as the Dexter F. Baker Professor of Practice in Creativity in the Masters of Engineering in Technical Entrepreneurship Program at Lehigh University. I’m also an avid product designer, kit maker, author, father, tinkerer, and member of the MAKE Technical Advisory board.


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Comments

  1. Anonymous says:

    Red Green lives!

    Is there nothing in Ontario without rust?

  2. justDIY says:

    @anonymous … aah, the rust belt – just like Michigan, we love our rust.

    what makes me laugh is the statement that “Every city has a bearing supply store”. I guess Canadians really like their bearings, there’s nothing like that around me for at least 200 miles.

  3. acidrain69 says:

    Very nice DIY. If you don’t have access to the tools to build this yourself, there are kits out there that mount on a bike. I have one of the Grubee kits mounts on a Trek Antelope 800. Works pretty good, and you just need a screwdriver and maybe a drill depending on your frame diameters. Clutch is manual, you just let out the clutch while riding and that starts the engine. They usually run about $250. Not as cool from the DIY perspective, but much easier. If you have the engine sitting around anyway, you could always build a DIY generator using a regulated car alternator.

  4. mlange.myopenid.com says:

    @anonymous:

    NO, there is NOTHING without rust.
    It’s like a disease, plaguing all steel and iron-based products. Anything that isn’t stored during the winter eventually gets infected.