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Behold The Hyundai Uni Wheel. Transportation May Never Be The Same (cleantechnica.com)

submitted 9 months ago by floofloof@lemmy.ca to c/technology@lemmy.world

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[–] BearOfaTime@lemm.ee 7 points 9 months ago* (last edited 9 months ago) (1 children)

Yep.

Trucks used these as far back as pre-WWII. It a great solution for off road vehicles to gain clearance. At low speeds, even universal joints work fine for this setup, because the shaft rotates at 1/3 wheel speed, like a drives haft does going into a differential.

This puts a diff at each wheel.

Edit: These are called Portal Gears

[–] __Lost__@lemmy.dbzer0.com 10 points 9 months ago (1 children)

Not quite portal gears, that has the input shaft fixed at the top. This is like an adjustable portal gear.

[–] BearOfaTime@lemm.ee 4 points 9 months ago

Meh, it's still a portal hub, where you put the input shaft is a minor difference. It's still putting the gearset in the hub, increasing the total weight of the vehicle, and increasing unsprung weight.

Calling it a new thing is a lie. All they've done is switch it to planetary gears. I'd bet lots of money this was tried a long time ago, and was shelved in favor of an offset input shaft.