Hacker News Board Hacker News, browsed like a classic message board
Live data from Hacker News

Tiny electric motor can produce more than 1,000 horsepower

supercarblondie.com

Post reply on HN
Print view View original

201–210 of 616 posts

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

#201

Post by cesaref »

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 don't see the weight reduction being very significant.

If we take a Tesla model 3, I believe it weighs 1611kg, and the motor shows up at 80kg if you google it (no idea if this is correct). This YASA motor by comparison weighs 14kg. So, this would drop the vehicle weight by 66kg out of 1611, so that's a 4% saving.

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

#202

Post by rounce »

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.

Absolutely and on top of that far lower pollution from tyre and brake dust, and less damaging to the road top surface.

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

#204

Post by linsomniac »

cesaref wrote: post #201
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 don't see the weight reduction being very significant. If we take a Tesla model 3, I believe it weighs 1611kg, and the motor shows up at 80kg if you google it (no idea if this is correct). This YASA motor by comparison weighs 14kg. So, this would drop the vehicle weight by 66kg out of 1611, so that's a 4% saving.

I assume that means it would be more like an 8% savings on the dual motor variants? At what point does it become significant?

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

#205

Post by linsomniac »

JKCalhoun wrote: post #197
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'm more excited about light electric vehicles. (Bikes, tuk-tuks, what-have-you).

...with 1,000 horsepower. =:-)

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

#207

Post by Enginerrrd »

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.

From Wikipedia on Axial Flux Motors: >"Mercedes-Benz subsidiary YASA (Yokeless and Segmented Armature) makes AFMs that have powered various concept (Jaguar C-X75), prototype, and racing vehicles. It was also used in the Koenigsegg Regera, the Ferrari SF90 Stradale and S96GTB, Lamborghini Revuelto hybrid and the Lola-Drayson.[9] The company is investigating the potential for placing motors inside wheels, given that AFM's low mass does not excessively increase a vehicle's unsprung mass.[10] "

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

#208

Post by SoftTalker »

dicknuckle wrote: post #144
xandrius wrote: post #99

Earlier quoted context omitted.

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.

Who still uses a checkbook?

And with your bank balance instantly available on the computer in your pocket, and transactions posted in near-real-time, why would you need to worry about balancing it?

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

#209

Post by thelastgallon »

infogulch wrote: post #191
b112 wrote: post #35

Earlier quoted context omitted.

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".

True! If only grandma wouldn't insist on bringing 250kg of weapons and ammunition with her everywhere I'd get much better range in my EV, but alas this is the USA.

250kg grandma = ~20 small dogs

250kg weapons = ~20 small dogs

Instead of technological advancements of EV motors, we can immediately use existing pharmaceutical tech (Ozempic, GLP-1) to immediately deliver weight reduction to cars. However, this will be immediately offset by the increase in weight of weapons carried, thanks to Jevons Paradox.

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

#210

Post by gwbas1c »

It's easy to forget that most of the weight in an electric car is the battery. It's ICE cars where a lot of the weight is in the motor.

That being said, could this be adapted so that a 2.8lb motor produces 100 hp? That would allow putting a small motor in each wheel, thus completely eliminating axels, driveshafts, and allow recapturing the space they used to occupy. It also wouldn't significantly impact unsprung weight.

Post reply on HN