Brad Graham, the Ontario-based leader of online DIY bike community Atomic Zombie and a former record holder for making the world’s tallest bicycle, may create more strange rides than any other amateur builder. Here are two of his latest.
After moving to a rural area this year, Graham built a bike that could handle large hills and gravel roads. Using scrap parts, he designed a trike with two rear wheels to bear the weight of a cargo box in back. A suspension system below the container smooths the ride on rough roads. He set the seat high to ensure good visibility, but low enough that he can push the backrest hard against the cargo box when he’s jamming up a hill.
Time: 1 week
Graham designed the recumbent Tomahawk purely for speed. He angled the seat back to make bike and rider more aerodynamic. By shortening the wheelbase and situating the rider between the wheels with the pedals out front, he improved the distribution of weight on the frame. To make the bike adjustable to riders of different heights, he built a sliding bracket that extends or shortens the steel boom that holds the cranks.
Time: 1 week
Five amazing, clean technologies that will set us free, in this month's energy-focused issue. Also: how to build a better bomb detector, the robotic toys that are raising your children, a human catapult, the world's smallest arcade, and much more.