this post was submitted on 03 Nov 2025
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28-pound electric motor delivers 1000 horsepower (supercarblondie.com)
submitted 22 hours ago by kalkulat@lemmy.world to c/technology@lemmy.world
178 comments fedilink hide all child comments
 

Maker website: https://yasa.com/news/yasa-smashes-own-unofficial-power-density-world-record-pushing-state-of-the-art-electric-motor-to-staggering-new-59kw-kg-benchmark/

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[–] lemming741@lemmy.world 2 points 6 hours ago (2 children)

They make sense for scooters, bikes, and other low speed or two wheel personal transport. For anything with an actual suspension (designed for a highway) there is just too much competition for space with brakes and suspension linkage. The unsprung weight, exposed high voltage cabling subject to road debris and accidents are problems too. And what to do hub motors really gain you?

[–] SaveTheTuaHawk@lemmy.ca 1 points 5 hours ago

Less weight, less parts, 4WD, 4W traction control, more cabin space because no driveshafts.

[–] eleitl@lemmy.zip 1 points 5 hours ago (1 children)

Simplicity, no transmission. As to unsprung weight, designs like these have a ridiculous power density, so add only very little. Advanced suspensions are active anyway, so just part of the wheel robot.

[–] lemming741@lemmy.world 1 points 2 hours ago (1 children)

They DO require transmissions! A single speed planetary gear set is still required, same as current EV drives.

Find me a hub motor datasheet with quoted power and torque below 1000 rpms. The YASA datasheets are all out to 8000 rpms. Useless at wheel speed.

They're quoting 30 second power numbers and dry weight without a gearbox. They're fishing for dumb money.

[–] SaveTheTuaHawk@lemmy.ca 1 points 1 hour ago (1 children)

A single speed planetary gear set

Sure, get semantic.

[–] lemming741@lemmy.world 1 points 1 hour ago

I'm looking for benefits over current EV drivetrains. So far, there aren't any.