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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

#61

Post by reactordev »

mrtksn wrote: post #50
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.” :)

I wonder if Americans don't have a mental image for measurement units so that they alway use some physical object as a reference. Sure, its useful to use a common object as a reference but I don't see that much often in other places. Most people usually understand what it means something to be 20 meters, 5kg or 2 liters intuitively. Like, when I hear that something is 60m tall I intuitively think if it as 20 story ap…

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…

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

#62

Post by hengheng »

dinkblam wrote: post #13
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…

saving 30 kg of weight on a 2000 - 2500 kg car won't lead to "significant efficiency gains"

I agree insofar as the motor is not a Big Ticket Item, opposed to ICE cars where the engine block is going to be 10% or more.

Tesla (I know) claimed a 30kg (?) weight loss on their Cybertruck (I know) just from moving their 12V systems to 48V, allowing for lighter cables at lower currents. Not all such potential is untapped, and my hunch is that there is more to be had with structural battery integration, battery cooling, and high voltage wiring.

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

#63

Post by zufallsheld »

mrtksn wrote: post #50
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.” :)

I wonder if Americans don't have a mental image for measurement units so that they alway use some physical object as a reference. Sure, its useful to use a common object as a reference but I don't see that much often in other places. Most people usually understand what it means something to be 20 meters, 5kg or 2 liters intuitively. Like, when I hear that something is 60m tall I intuitively think if it as 20 story ap…

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

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

#64

Post by ants_a »

impossiblefork wrote: post #16
FabHK wrote: post #8

Outperformance metric is basically power density. The model described is some 13 kg and delivers 750 kW peak, 350+ kW sustained. (That's 28 pounds, 1000 hp peak, 470+ hp sustained.) The 40% improvement is actually 36% and is versus the previous model of the same company.

I sort of wonder how well these things can be scaled down. Wheel hub motors are obviously bad, for harshness reasons, but if you could have a motor like this weighing 1-2 kg, and put one on each wheel, that'd be okay. Power-wise this would be okay if things are linear. 26 kW per wheel sustained power output is more than enough for a light car. The question is what torque a scaled-down machine can be expected to have.

I'm wondering if it would make sense to integrate the rim, motor and wheel bearing into a single assembly to save weight and cost. That combined with the weight and packaging benefits of not having half shafts and differentials might make it worth it. Plus there can be additional benefits, like the extra maneuverability that ZF Easy Turn and Hyundai's e-Corner have demonstrated.

30kW sustained/60 kW per wheel peak power is easily enough even for large passenger vehicles. Sustained could take 3 ton vehicle up a 10% grade at 120 km/h.

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

#65

Post by martin_a »

zufallsheld wrote: post #63
mrtksn wrote: post #50

Earlier quoted context omitted.

I wonder if Americans don't have a mental image for measurement units so that they alway use some physical object as a reference. Sure, its useful to use a common object as a reference but I don't see that much often in other places. Most people usually understand what it means something to be 20 meters, 5kg or 2 liters intuitively. Like, when I hear that something is 60m tall I intuitively think if it as 20 story ap…

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".

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

#66

Post by helsinkiandrew »

dinkblam wrote: post #13
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…

saving 30 kg of weight on a 2000 - 2500 kg car won't lead to "significant efficiency gains"

The Ferrari 296 GTB weighs about 1500kg and the sports version 1300kg. For the cars YASA produces motors for it's much easier to increase the power to weight ratio by reducing weight than increasing power. I imagine an important design point for all of its components is to reduce weight.

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

#67

Post by dist-epoch »

reactordev wrote: post #61
mrtksn wrote: post #50

Earlier quoted context omitted.

I wonder if Americans don't have a mental image for measurement units so that they alway use some physical object as a reference. Sure, its useful to use a common object as a reference but I don't see that much often in other places. Most people usually understand what it means something to be 20 meters, 5kg or 2 liters intuitively. Like, when I hear that something is 60m tall I intuitively think if it as 20 story ap…

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…

Europeans don't even know what it means to "balance a checkbook", so they must be dumber.

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

#68

Post by throw-qqqqq »

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".

>> 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".

Even in the US, your average grandma weighs less than 2-300kg :D

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

#70

Post by mrtksn »

reactordev wrote: post #61
mrtksn wrote: post #50

Earlier quoted context omitted.

I wonder if Americans don't have a mental image for measurement units so that they alway use some physical object as a reference. Sure, its useful to use a common object as a reference but I don't see that much often in other places. Most people usually understand what it means something to be 20 meters, 5kg or 2 liters intuitively. Like, when I hear that something is 60m tall I intuitively think if it as 20 story ap…

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…

Sure but don't they have a mental image for 80 feet for example? Why articles will almost always include something like "that like 50 chairs put next to each other" when length is mentioned.
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