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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

#481

Post by loeg »

Empact wrote: post #354
Aurornis wrote: post #251

Earlier quoted context omitted.

> 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. EV motors are already lightweight. The electric motor in a vehicle like a Tesla Model 3 already weighs less than you do. Reducing that one component by 75% would be a weight savings equivalent to about a half of a passenger. Not a significant effic…

This, or a miniaturized version thereof could change the game for light electric vehicles - imagine an electric motorcycle that weighs substantially more like an electric bicycle. Right now it takes about 10-15lbs of motor to produce a 3KW motor for an electric bike, this motor is about 10 times that in power density afaict. The Livewire electric motorcycles use something like 100-200 lbs of motor to produce 1/4 as m…

The problem for electric motorcycles is the battery weight.

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

#482

Post by lazide »

usrusr wrote: post #421
MadnessASAP wrote: post #360

Earlier quoted context omitted.

Listen, your world may not allow you to sell an e-bike with a 1000hp motor on it. But my world allows me to put a 1000hp motor on an e-bike and not tell anyone. Now hold my beer...

So that you can flip over in an uncontrolled wheelie at an even lower fraction of the throttle? Even if there was infinite energy throughput (aka power) at zero mass, the main limiter for power per total system mass would still be the battery. In any practical setup, even in super short runtime designs, getting, say, twice the power would not all that dramatic a runtime hit if it was achieved by scaling the same moto…

Honestly he’d probably just pretzel the frame underneath him, assuming he gunned it.

That’s enough power to potentially do that to a full size car frame.

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

#483

Post by RogerL »

NathanKP wrote: post #425
mywittyname wrote: post #403

Earlier quoted context omitted.

Does this motor design scale down? It's not clear from the article - the article focuses more on the relative efficiency gains over the previous model. A 30lb 1000hp motor doesn't necessarily mean that they can also produce a 3lb, 100hp motor. It would be cool if it did, but I doubt that it does because usually component strength doesn't scale linearly. That being said, these are still valuable for traditional EVs. E…

I'm more fascinated by the question of whether it scales up... imagine much smaller and more efficient electric engines for cruise liners and cargo ships.

The article and the press release it was derived from says nothing about "more efficient", just smaller.

https://yasa.com/news/yasa-smashes-own-unofficial-power-dens...

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

#484

Post by loeg »

lunias wrote: post #198
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…

I wish more people on the road realized the extent to which weight reduction improves all aspects of the driving experience... it really does compound unlike any other change that you can make to a vehicle. IMO heavy vehicles are a scam and the antithesis of the direction we should be moving.

It's ~all battery weight, though. This doesn't really move the needle.

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

#485

Post by jlarocco »

ashirviskas wrote: post #450
oblio wrote: post #439

Earlier quoted context omitted.

Any ebike that goes faster than 25kmph in Europe and whatever it is in NA should not be allowed anywhere were pedestrians can go. The real solution people don't want to accept is that ALL non arterial roads in ANY urban/suburban/rural environment should be limited to 30kpmh (and equivalent in NA). And by limited I mean traffic calmed: 1 lane per direction, narrow lanes, raised street crossing, raised intersections, E…

> Any bike that goes faster than 25kmph in Europe and whatever it is in NA should not be allowed anywhere were pedestrians can go. So, literally any bicycle?

As a cyclist, motorcyclist, and potential e-bike owner, I'd actually be in favor of making it any bicycle.

Anybody moving significantly faster than the flow of traffic is endangering the rest of the users.

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

#486

Post by benlivengood »

You could almost replace the disc brakes with these and have hub motors for free (in terms of unsprung weight). Depends on the torque and safety margin on the 700KW level of performance. For emergency safety you could have a mechanical short to let the motors dump energy into a big heating element as a last resort (risking wheel lockup) but this would truly be drive-by-wire braking.

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

#487

Post by catapart »

Dylan16807 wrote: post #457
catapart wrote: post #328

Earlier quoted context omitted.

10 lbs per motor in an aircraft is huge. And the fact that they can do it WITHOUT having to use more expensive materials or manufacturing or amenities is the thing that is huge about it . It's a fair take on your responses because talking about a SINGLE motor is missing the point. You're not engaging with the actual point that OP made, you're trying to dispute OP by engaging in your own point about what difference th…

> 10 lbs per motor in an aircraft is huge. That's cool but the conversation was about cars. It's a welcome but tiny improvement for cars. Even after you multiply by 2 or 4, especially because the more motors a car has the smaller they are.

No, it's literally - by the discussion partner's own estimation[0] - cutting the motor size in half. That's not a tiny improvement, it's a half-weight reduction for the motor. It's not as big as I naively estimated from a google search, but it's still half the weight. That's the kind of thing engineers chase as a benchmark and rarely every actually achieve. It's great.

But also, I reject your attempt to reframe the discussion as strictly car focused. OP specifically mentioned flight. Which doesn't necessarily mean it was all about aircraft - the article is about cars after all. But it certainly doesn't mean that the conversation was strictly about cars, either.

[0]: I've googled this claim and I'm willing to accept it, but the only sources for it I could find were subtractive estimations from youtubers whom had pulled apart the motors. Even additional claims from forums and whatnot seemed to trace back to one of those video sources. It would be nice if Tesla would deign to discuss some specificiations themselves, but if there's an actual official source, I have yet to see it. And, for what it's worth, the motors that I've seen referenced were all for the rear motor that I understand to be the smaller motor in Teslas. Either way, I don't doubt the 70 lbs estimate is far off, so it's moot.

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

#488

Post by kube-system »

Empact wrote: post #354
Aurornis wrote: post #251

Earlier quoted context omitted.

> 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. EV motors are already lightweight. The electric motor in a vehicle like a Tesla Model 3 already weighs less than you do. Reducing that one component by 75% would be a weight savings equivalent to about a half of a passenger. Not a significant effic…

This, or a miniaturized version thereof could change the game for light electric vehicles - imagine an electric motorcycle that weighs substantially more like an electric bicycle. Right now it takes about 10-15lbs of motor to produce a 3KW motor for an electric bike, this motor is about 10 times that in power density afaict. The Livewire electric motorcycles use something like 100-200 lbs of motor to produce 1/4 as m…

Electric pedal bikes are already at the limit of what their chassis’s support even with small motors.

10kw+ is comparable to starter gasoline motorcycles in the US (or midsize motorcycles elsewhere) capable of going on the highway. At that point, you need to start scaling everything, like brakes, tires, and the size of the chassis.

The livewire has a motor large enough to drive a car.

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

#489

Post by tetha »

hinkley wrote: post #377
testdelacc1 wrote: post #285

Earlier quoted context omitted.

Your intuition is correct. Americans’ Love Affair with Big Cars is Killing Them ( https://www.economist.com/interactive/united-states/2024/08/... ) - The Economist. > In a crash, the fatality rate of the occupants of the heavy pickup truck is about half that of the compact car. But they are also far more dangerous to the fatality rate of people in other cars. > The fatality rate is roughly seven times higher when col…

Well, hood and grill shapes are mandated for pedestrian safety but everyone else is fucked.

Well, for an about 1 meter tall obstacle (like a kid), some of these large SUV shapes have ~10 - 12 meters of a blind spot to spot this obstacle.

There is another small vehicle around, which usually has a lower stopping distance, and a smaller blind spot in front of the vehicle at around 7-9 meters under somewhat more adverse conditions than regular highway traffic. That's the Leopard 2 tank.

That vehicle also has less problems to find a parking spot.

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

#490

Post by fukka42 »

RajT88 wrote: post #406
fukka42 wrote: post #393

Earlier quoted context omitted.

[flagged]

Not really... https://www.reddit.com/r/AskAmericans/comments/184oag8/can_y... That assertion seems to be a disconnect of language. But - Selling firearms in Wal-Mart is bad enough, but it does tend to be more rural Wal-Marts than suburban (and not at all urban). Said firearms are under lock and key in the same way they would be at gun stores. There are many gun shops in the same areas where Wal-Mart sells firearms. A…

Right, so they sell guns at a super market? Walmart is a super market and like you say, they sell guns.

How is this "not really"?

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