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hub wheel motorsIEEE Spectrum
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79% Informative
In-hub wheel motors are among the most tantalizing and yet elusive of electric-vehicle technologies.
Donut Lab claims these wild-looking, hole-in-the-middle motors deliver the highest density of any hub motors yet.
The company’s lineup includes a 53-centimeter diameter ( 21 inch ) model with a claimed 650 kilowatts ( 844 horsepower) and 4,299 Newton -meters ( 3,171 pound-feet ) of torque.
Donut Lab has modular, connectible system of batteries, controllers and software.
One version, designed for semi trucks, generates 200 kilowatts .
A 43-centimeter ( 17-inch ) motorcycle motor makes a healthy 150 kiloweatts.
Itty-bitty versions for scooters and drones include a drone motor that weighs just 1.5 kilograms , with a 120-mm diameter.
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