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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

#141

Post by wongarsu »

7952 wrote: post #112
thelastgallon wrote: post #96

Earlier quoted context omitted.

> This is awesome. Lighter motors also make electric flight more viable The next innovation we need is Aerial refueling[1] for electric planes. High density swappable batteries and high altitude wind/solar plants that can swap batteries mid air. Perhaps some billionaire will develop a large fleet of these to service all flights! If no western billionaires, we just have to wait for China to develop this tech. [1] http…

Surely it would be easier to recharge rather than swap batteries? I wonder if in the future war will be like a turn based strategy game as everyone wait for drones to recharge before making a move.

Mid-air: yes. A boom with a charging cable or even beamed energy would be much easier.

On the ground: swapping batteries is faster, and batteries are cheaper than planes or drones. You want the expensive part back in the air as soon as possible so you don't need as many of them. On the whole this probably also simplifies logistics: in civilian aviation airport space is limited, in wartime it's easier to transport one hundred drones and two hundred battery packs to the frontline than to transport two hundred drones

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

#143

Post by tclancy »

jama211 wrote: post #139
rob74 wrote: post #37

Earlier quoted context omitted.

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…

I don’t see anything inside the article that says it’s designed to be inside the wheel. I’m not sure where they got that from.

I get your skepticism and I know nothing about the field, but if the round thing in the press release picture isn’t designed to fit in a wheel, I’m confused. https://yasa.com/news/yasa-smashes-own-unofficial-power-dens...

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

#144

Post by dicknuckle »

xandrius wrote: post #99
reactordev wrote: post #61

Earlier quoted context omitted.

Americans do not do metric. Americans can’t even balance a checkbook. Hence the small dog reference for mental “clarity”. We’re dumb. Just look at the news…

I don't think it's fair to insult all US citizens because of your personal shortcomings.

Do you not have personal experience with people under 40 in America? I would bet $20 over 95% of them don't know how to balance a check book.

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

#145

Post by hylaride »

jama211 wrote: post #139
rob74 wrote: post #37

Earlier quoted context omitted.

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…

I don’t see anything inside the article that says it’s designed to be inside the wheel. I’m not sure where they got that from.

I think they misspoke when they said "in" the wheel, but supercars can have a separate motor for each wheel, and the closer they are to the wheel the better the torque as it's not also driving a longer shaft. The smaller the motor, the closer you can get.

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

#146

Post by zeristor »

thelastgallon wrote: post #96
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…

> This is awesome. Lighter motors also make electric flight more viable The next innovation we need is Aerial refueling[1] for electric planes. High density swappable batteries and high altitude wind/solar plants that can swap batteries mid air. Perhaps some billionaire will develop a large fleet of these to service all flights! If no western billionaires, we just have to wait for China to develop this tech. [1] http…

Or laser power beaming from a satellite, or a ground station.

Not very feasible, but an option that has been thought through.

I guess there’s a system that’s gated to track dependent technologies, to track improvements and what they’ll enable.

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

#147

Post by kobalsky »

tim333 wrote: post #142

Just stick four on a car with fans on and there's your flying car. Not much range though probably.

the first thing I thought was building a robot dog with these, they probably already built an evangelion with these they aren't showing us

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

#148

Post by mbfg »

Zanfa wrote: post #84
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.

I might be wrong, but I don’t think these motors are intended to be used inside the wheel. That would add a ton of additional requirements in terms of physical durability as well as constrain optimal torque and RPM of the motor design.

I believe the Aptera was originally going to have motors in the wheels... My understanding is the the first version will forego that, as there were challenges i guess, but i think they still to eventually do that.

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

#149

Post by fainpul »

chris_overseas wrote: post #2

A link to the press release https://yasa.com/news/yasa-smashes-own-unofficial-power-dens...

> 59kW/kg

At this point why don't we get rid of the k prefix and write 59W/g?

Edit:

I was half joking, but various answers mention kW being standard for motors, kg being the SI unit for mass etc. All true, but as used here in a combined unit, which means "power density" it still would make sense IMO. It's not like the "59" tells you that it's a strong motor and hence you want kW to compare it to other motors. You can't, it's just a ratio (power to weigth). W/g just reads much nicer in my head. Or we could come up with a name, like for other units. Let's call it "fainpul" (short fp) for example :)

59 fp is a new record for electric motors!

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