Live data from Hacker News

Tiny electric motor can produce more than 1,000 horsepower

supercarblondie.com

131–140 of 616 posts

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

#131

Earlier quoted context omitted.

It helps to understand that the only freedom Americans only cared for (and the only freedom they have left from the looks of it) is the freedom to choose standards of measurement and vocabulary. This will provide historical context: https://www.youtube.com/watch?v=JYqfVE-fykk (Washington's Dream - SNL)

Huh? Britons get locked up for social media posts. Most of the world doesn’t have guns. And among the first world we’re the only ones free to go bankrupt from medical bills! Our problems don’t stem from lack of freedom, they stem from too much of it.

> Most of the world doesn’t have guns.

No guns, but they have solar panels, batteries, EVs, etc.

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

#132

Earlier quoted context omitted.

I guess you're in the minority here. In Germany, everything Remotely large will be measured in football fields or "Saarlands".

Don't forget to mention the inofficial units for fluid volumes being "Badewannen" and "Schubkarren".

Can’t forget the Olympic sized swimming pools!

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

#133
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.” :)

Is even a 13 kg dog "small"? It certainly does not feel small if you are carrying it upstairs.

It's American small.

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

#134
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…

[deleted]

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

#135
post #29

Tesla should buy Mercedes, they'd make a good team together.

Mercedes should buy Tesla you mean.

One of my fundamental criticisms of Elon musk performance as a CEO. The vast stock market price and valuation should enable these sorts of transactions.

It would enable Tesla to diversify operations move into applying its technology on a mass-market basis to hybrids without "damaging" the "purity" of the Tesla brand.

It would enable more marques to target specific economic bands, international markets, etc.

But no we basically have a car company that makes two cars.

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

#136

I'm curious as to the efficiency of the motor (basically, how much of the input electric power is converted to motive power). If it isn't very good, then it might be excellent for drag races, but maybe not so many others. Also, any power that doesn't turn into torque, is likely to be expressed as heat.

It would almost have to be very efficient -- they're saying it can do something like 500HP continuous, and it doesn't have enormous fins all over it for cooling.

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

#137

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…

A sufficiently compact electric motor enables mounting it in the nose-wheel of commercial aircraft, allowing it to be driven around like a golf cart. This means the plane can taxi without the use of its engines, just the power from the APU. [1] Also planes would not have to wait for a tug to pull back from the gate, which improves turnaround times for the airline. [1] https://www.wheeltug.com/

You could also spin up the landing gear wheels prior to landing to massively reduce the amount of rubber transferred from tire to runway on touchdown. Rarely done today because of the weight and complexity of adding motors, but letting the ground spin up the wheel is pretty expensive both for tire wear and runway maintenance

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

#138
post #34

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

Much better you should post it and somebody mark the banner ridden one for deletion.

'Supercarblondie' manages to hit everything I dislike about automotive marketing online all at once.

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

#139
post #37
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…

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.

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

#140
post #15
post #7

Earlier quoted context omitted.

But EVs are already heavy because of the battery. I suppose percentage-wise the motors don't make much of a difference (?)

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.

Where does it say it’s inside the wheel? Not sure about that
Post reply on HN