4 ms·
Large outrunner motors like Emrax aren't much heavier than typical cast alloy wheels. Assuming wheel-motor eliminates disc brake components (sounds scary, right
by roman_savchuk 9y ago
Large outrunner motors like Emrax aren't much heavier than typical cast alloy wheels. Assuming wheel-motor eliminates disc brake components (sounds scary, right?) assembly will probably be even lighter.
http://emrax.com/products/emrax-268/ http://emrax.com/products/emrax-268/
- agumonkey 9y agoThanks a ton for that
- johnbrodie 9y agoAt least on a performance vehicle, that's still far too heavy IMO. 40ish lbs? The (cheap) wheels on my Miata are 11 lbs, without any exotic materials or crazy engineering. Almost quadrupling the unsprung mass is a hard sell performance-wise.
- roman_savchuk 9y agoWhich gen Miata? IIRC NA had something like 5.5x14" wheels which are tiny. But if we look at bigger production car wheels even modest 8x18" could weigh > 30lbs. Second, (unsprung mass/sprung mass) ratio is the thing that counts, not the mass itself. So, while 40 lbs wheel is terrible for the Miata, it might be quite ok for the vehicle twice Miata's weight.