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I admire the idea of hubmotors as well, but once mentioned them to a car engineer, who basically said "think about unsprung weight". Which, now that I think of
by markhahn 3y ago
I admire the idea of hubmotors as well, but once mentioned them to a car engineer, who basically said "think about unsprung weight".
Which, now that I think of it again, is a bit silly because most EV mass is battery, not motor.
- zrobotics 3y agoShaving unapeung weight down, even by a small fraction of the total vehicle weight, will dramatically affect handling and perceived ride quality. Even though the battery makes an EV heavier than an equivalent ICE car, there is still the need to reduce unsprung weight. Thus, it would be better to have the motor inboard and run a cv axle out to the wheel than have the entire mass of the motor out on the wheel.
- lelanthran 3y agoUnsprung weight does not have a linear impact. Increasing the unsprung weight by 10% causes a 100% deterioration in handling and ride quality. You're suggesting increasing the unsprung weight by about 400%.
- rootusrootus 3y ago> once mentioned them to a car engineer .... now that I think of it again, is a bit silly No offense, but this right here is peak HN.