A YouTube creator has carried out an engineering project that replaces a bicycle's chain with a 3D-printed gear system. The fully functional design demonstrates the potential of additive manufacturing to create force transmission mechanisms. The entire process, from modeling to motion tests, was documented on his channel.
Design and Mechanics of a Printed Gear Transmission ⚙️
The system is based on toothed wheels and a set of bevel gears that transmit motion from the pedals to the rear wheel axle. The structural parts, also printed, serve as support and alignment. Although the mechanism operates, the nature of the plastic material presents limitations in durability and tolerance to loads and friction, aspects where industrial metal components maintain an advantage.
Pedaling Toward the Future (with a Plastic Sound) 🔊
It's an advance that makes us dream of silent rides, although reality sounds more like a blender working under stress. The project proves that you can do without the chain, but not without the patience to adjust gears that prefer to bite each other rather than cooperate. An elegant solution for those who always thought that chain oil was a perfume that was too intense.