Technology

Trippy Bicycle uses multiple partial wheels

Bikes need at least two wheels to be able to roll, but [The Q] realized that you don’t necessarily need the wheels to be one piece. As long as you have at least two points of rolling contact with the ground, you can distribute the load over several partial wheels. He demonstrated it in split the rear wheel of his bicycle in two and then third parties to create an absolute head turner.

Since a conventional bicycle wheel with tensioned spokes would collapse if cut, [The Q] used instead of one-piece aluminum wheels. The tires have been cut into pieces and the inner tubes have been replaced with sections of thick-walled HDPE pipe that will not collapse under the weight of a human being. HDPE tires and “tubes” were riveted to the wheels.

To mount the additional wheels on the chassis, [The Q] welded a set of extensions to the rear with mounting points for the partial wheels. To keep them in sync, timing is done with chains running on sprockets welded to disc brakes. In the second video, he also tries to split the front wheels, but found that the front forks couldn’t handle the torque and flexed dangerously when the contact point was pushed too far forward. Instead, he made do with three wheels in the back.

Just like his hubless bicycle, it’s not designed to be better than a standard bike, but it’s great for grabbing attention. Although at least in some situations, the all-wheel-drive bike he built last year could be useful.

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