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I know.Unsprung weight. Both Aptera and Lordstown are/(were) bankrupt and hub motors were not the only reason but no. It's not and NO.
Given the fact that there is no need for differential, half shaft, internal gears, the total weight of the car would be less. This combined with lighter material for the motor itself could open some feasible possibilitiesUnsprung weight. Both Aptera and Lordstown are/(were) bankrupt and hub motors were not the only reason but no. It's not and NO.
That's why I want Tesla to work on it because Tesla seems to improve any technology they touch onOP's motor pictured is not just a hub motor but also direct drive. Hyundia's idea fixes that with some speed reduction and helps reduce unsprung weight at the considerable expense and complication of having to lubricate and then seal a complicated gear reduction mechanism from the elements.
The basic issue is power output per frame size. Frame size drives cost. If you have a certain diameter motor with the related expense, you'd want to spin it up as high as practical to maximise the power/cost ratio. For that you need a substantial gear ratio, between perhaps 8 to 16 to 1.
If you look at EV trends you'll see that motors are spinning faster than ever before, moving you further and further away from the capability of a hub motor. I can't see it ever happening in volume production.
Aptera isn't bankrupt....yet.Both Aptera and Lordstown are/(were) bankrupt
Some one needs to tell Rivian.Unsprung weight. Both Aptera and Lordstown are/(were) bankrupt and hub motors were not the only reason but no. It's not and NO.
Sometimes the unsprung weight is an advantageI’m getting the impression some folks don’t understand the key difference between “weight” overall and “unsprung weight”
So which one these go inside of the wheel?Some one needs to tell Rivian.