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Behold The Hyundai Uni Wheel. Transportation May Never Be The Same (cleantechnica.com)
submitted 2 years ago by to c/technology@lemmy.world
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[–] 7 points 2 years ago* (last edited 2 years ago) (2 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

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  • [–] 10 points 2 years ago (1 child)

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

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  • [–] 4 points 2 years 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.

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