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Old 03-10-2019, 04:04 PM   #1 (permalink)
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Orbis Wheel

https://orbisdriven.com/

Quote:
ORBIS wheels bring multiple benefits to 4-wheeled vehicles. The Ring-Driven™ wheel weighs no more than a conventional wheel, yet incorporates the entire drivetrain and braking system for that wheel.
I always thought the Edison 2 in wheel suspension deserved a better fate. Comes now Orbis, with a wheel that is hubless and not at the same time.

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Old 03-10-2019, 10:57 PM   #2 (permalink)
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Why is this in the unicorn corral? Seems like a neat invention and a logical extension of the proven tech Edison2 came up with.
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Old 03-10-2019, 11:05 PM   #3 (permalink)
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It makes claims that can't possibly be true, such as "weighs no more than a conventional wheel". I'm not thrilled that there's a gear around the inside perimeter of the wheel either. Seems like debris would constantly be crunched in there.

The Edison in-wheel suspension was not a good idea. It adds to unsprung weight needlessly and compromises the length of travel. Conventional suspension is pretty good. It didn't really solve any problems.

That's the whole thing, a new product must solve a problem better than any other existing products.
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Old 03-11-2019, 01:08 AM   #4 (permalink)
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Quote:
Why is this in the unicorn corral?
I didn't think much about the choice. Get the mods to move it if you like. Okay by me.

I'd be more impressed if they had the wheel on both ends of the car. It appears the Civic is frontwheel drive with these tagged on the back, but the exploded diagram shows an electric motor. But no brake? [shrug]

Then there's the $10K price tag.
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Old 03-11-2019, 04:35 PM   #5 (permalink)
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Quote:
Originally Posted by redpoint5 View Post
The Edison in-wheel suspension was not a good idea. It adds to unsprung weight needlessly and compromises the length of travel. Conventional suspension is pretty good. It didn't really solve any problems.


I'm not sure where this extra unsprung weight you're talking about comes into it?

I see a coilover, a couple arms, a brake caliper/rotor, and a hub, all cleverly packaged, but the same stuff as in any current car.

But you certainly have a point about somewhat limited travel.



That's one of the drive wheels. That reduction box/portal axle thing does look to add some unsprung mass. But IIRC the reason for it was to tuck the axle aerodynamically up with the main suspension support spar above. Throw the drive axle straight into the back of the hub there, and I'm still not seeing the reduction in unsprung weight with something like a Honda civic:



Orbis... yeah, they're adding unsprung weight, but they seem to weigh about half (35lbs) of what other hub motors weigh. Seems like a win and pretty non-unicorn to me.
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Old 03-11-2019, 04:41 PM   #6 (permalink)
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Maybe it doesn't add much weight, but the point that it reduces travel remains. If this were a better way to do suspension, they'd already be using it.


...and I was misremembering their implementation of in wheel suspension thinking it was something more along these lines:


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