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Message: <blockquote data-quote="imhotep" data-source="post: 31147728" data-attributes="member: 562115">A new in-wheel motor for electric vehicles (EVs) delivers a massive amount of torque in a lightweight package, its developers say.The motor — which was made by YASA, a subsidiary of Mercedes-Benz that also provides motors to Ferrari — weighs only 28 pounds (12.7 kilograms) but can deliver up to 1,000 horsepower at once or a sustained 469 to 536 hp for longer durations. This new mark breaks YASA's own previous unofficial record, a 29-pound motor that yielded 738 horsepower, company representatives said in a statement.For comparison, the 2025 Nissan Leaf has a single motor that generates 214 hp, and even a high-performance EV like the Tesla Model S utilizes three motors to generate around 1,020 hp.The ability to pack so much power into such a compact, lightweight motor is due in part to YASA's axial flux technology. Traditional radial flux motors are longer, tube-like structures, with a stator — the stationary part of a motor that creates a magnetic field used to produce motion — surrounding a cylindrical rotor. A magnetic field is passed perpendicularly to the shaft through the cylinder to spin the rotor.By contrast, an axial flux motor is more like a pancake, with a disc-like rotor and stator. Magnetic flux passes along the axis parallel to the shaft (hence the name). The axial flux tech allows for much smaller designs than traditional radial designs, according to YASA.<h2>Much lighter EVs in the future</h2>The company emphasized that the design is scalable and doesn't rely on any rare or exotic materials to function.The design also opens up a pathway for massive weight reduction in EV design. YASA said that deploying the in-wheel motors in lieu of a traditional power and drivetrain could save around 440 pounds (200 kg). And for vehicles designed from the ground up to incorporate the new motor, the savings could be closer to 1,100 pounds (500 kg).</blockquote>

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