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Tiny electric motor can produce more than 1,000 horsepower

supercarblondie.com

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Re: Tiny electric motor can produce more than 1,000 horsepower

#51

Post by eru »

rob74 wrote: post #37
nmehner wrote: post #15

Earlier quoted context omitted.

The issue with this type of motor is that it is part of the unsprung weight since it is inside the wheel. This is probably why savings here matter a lot more (or at least in a very different way) than the battery weight.

Ok, now I understand why this motor is only used in supercars - installing four (or even only two - according to https://www.mercedes-benz.de/passengercars/technology/concep... , even the AMG GT-XX has "only" three of them) hub motors with twice the power of a Tesla Model 3 in any other car would be ridiculous. So, the actual challenge is to make this motor even smaller while keeping the same power to weight ratio, s…

Well, Tesla also started with the higher end of the market. That's where people are willing to pay more.

Re: Tiny electric motor can produce more than 1,000 horsepower

#52

Post by eru »

b112 wrote: post #35
poniko wrote: post #9

Earlier quoted context omitted.

Yea that's the thing right, the battery is so very much of the weight that optimizing the other parts are "meh" at this point. What is cool is that the 600Wh/kg solid state batteries seems like they are really finally here soon :) i.e removing 200-300kg from a car in one go will be a game changer.

No wonder electrics don't sell well in the US. People weigh more, you're basically saying that leaving grandma at home, is a "game changer".

Well, the world's most popular electric car brand (BYD) is also virtually banned in the US. That doesn't help with adoption.

Re: Tiny electric motor can produce more than 1,000 horsepower

#53

Post by mort96 »

b112 wrote: post #35
poniko wrote: post #9

Earlier quoted context omitted.

Yea that's the thing right, the battery is so very much of the weight that optimizing the other parts are "meh" at this point. What is cool is that the 600Wh/kg solid state batteries seems like they are really finally here soon :) i.e removing 200-300kg from a car in one go will be a game changer.

No wonder electrics don't sell well in the US. People weigh more, you're basically saying that leaving grandma at home, is a "game changer".

Range being worse with a fully loaded car than with a lightly loaded car isn't exactly news, and not exactly limited to electric cars. I can clearly feel my old diesel struggling more when I'm driving 3 friends and with loads of heavy stuff in the back than when I'm alone. That makes the gas bill more expensive.

Re: Tiny electric motor can produce more than 1,000 horsepower

#54

Post by taneq »

davedx wrote: post #6

Could lead to significant efficiency gains for EV's, because 1/4 of the motor weight means better power-to-weight ratio... a lot of things will automatically get better. YASA was founded in 2009, a spin out from Oxford University following the PhD of founder and still CTO, Dr Tim Woolmer. "Over the decades that followed both of these technologies were explored. But despite the potential for weight reduction, smaller…

The other aspect is that a smaller motor with the same power generally has higher efficiency, by necessity, since it has less heat dissipation. So higher power and higher efficiency and lower size/weight all go together. It’s a great synergy.

Re: Tiny electric motor can produce more than 1,000 horsepower

#55

Post by eru »

defrost wrote: post #33
agys wrote: post #18

Everything but the Metric System: “The new YASA axial flux motor weighs just 28 pounds, or about the same as a small dog.” :)

The link you're quoting, the one posted, is a second hand US report. The primary company link is from a UK subsidiary of Mercedes-Benz and is (almost) fully metric (the fundemental units US weights are officially defined with respect to (for more than a century now)). See: https://yasa.com/news/yasa-smashes-own-unofficial-power-dens... Earlier in the summer YASA achieved 550kW (738bhp) from a 13.1kg version of its ne…

> The link you're quoting, the one posted, is a second hand US report.

You can tell, because a proper Brit would have given it as 2 stone, not 28 pound.

Re: Tiny electric motor can produce more than 1,000 horsepower

#56

Post by rob74 »

varjag wrote: post #20

The new YASA axial flux motor weighs just 28 pounds, or about the same as a small dog. But how many footballs a small dog weighs?

Not sure about that, but if you ask me, a really small dog only weighs up to 7 pounds - or otherwise said, this motor weight as much as four fat Chihuahuas ( https://en.wikipedia.org/wiki/Chihuahua_(dog_breed) )

Re: Tiny electric motor can produce more than 1,000 horsepower

#58

Post by eru »

aleph_minus_one wrote: post #27
varjag wrote: post #20

The new YASA axial flux motor weighs just 28 pounds, or about the same as a small dog. But how many footballs a small dog weighs?

> But how many footballs a small dog weighs? Which kind of football: the British or the US-American one? :-)

Australian rules.
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