New Motors to improve range??


AOF Addict
Altoona, PA
A new motor design claims 2-5x torque at similarly scaled conventional motors, which means we could shave maybe 2x the weight off the motor. Of course I don't know how much the motor itself weighs so maybe that isn't a huge improvement. However they claim their motor is 10% more efficient, which is a direct range increase. That's pretty cool. Here is the article:
Texas Start-up New Motor Design


Well-known member
Corona Ca
The Alta motor is about 17 lbs. However, I'd need more data before coming to any conclusions regarding this so called "breakthrough". For example, they quote power/torque density but that doesn't consider size or shape. Yes, it might very well have 2x torque density but if the darn thing needs to be 2 feet in diameter and only a couple inches wide who cares, it'll never fit on a bike. Also, how well does the technology/manufacturing scale? Maybe it's 2x at 250kw but when you scale it down to 50kws how's it do? Plus, some of the weight savings might be lost if more extensive/heavier control electronics or inverter is required. Just too many unanswered question. However, the mechanical advance/retard of the system is pretty slick and it does eliminate wasted power required for typical d axis (speed) regulation.

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