Donut spun off from this innovation, set up to build these donut-shaped rim motors in a variety of sizes so as to cater for the entire electric mobility industry. In addition to the five different ...

Can you run an electric motor for two years ... solid lesson in low-current design. The donut motor is really just a brushless DC motor with a sign-pole stator and a multi-pole rotor.

For a compact EV crossover, Donut Lab thinks its tech could reduce the number of components in a powertrain by three-quarters, saving weight and assembly time—and therefore money. For a semi-truck, ...