3 ms·

I love innovation. There still needs to be a CV joint to allow steering, but short of hub motors[1] There isn't much you can do about that. What I would be in

I love innovation. There still needs to be a CV joint to allow steering, but short of hub motors[1] There isn't much you can do about that. What I would be interested to see is how lubrication works. Do you think they just have a bunch of oil in the bottom and rely on centrifugal force to fling it to the ring gear? Then let surface tension transmit it to the sun gear? [1] They are heavy and heavy wheels affect ride quality, as suspension works essentially by allowing a light wheel to move up and down dampening against the mass of the heavy body. If the body is light, then you need to have less dampening, which means more shock/impulse is transferred into the main body of the car/

tlb 3y ago
The hard thing with lubrication is sealing it so it doesn’t leak. Considering the pinion gear and shaft moves in 2 axes relative to the housing, that could be tough.
audunw 3y ago
> There still needs to be a CV joint to allow steering Naw, because if you look closely in the video you can see that the motors turns with the wheel. With small EV motors that’s not unreasonable. Presumably the motor is free to tilt up and down a bit as well to deal with changing camber. > but short of hub motors[1] There isn't much you can do about that. I mean, it is pretty much a hub motor that has been decouple in the vertical motion so it doesn’t contribute to unsprung mass, and with a good reduction gear as a bonus.