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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

#551

Post by School-Cotton »

Dylan16807 wrote: post #533
ac29 wrote: post #527

Earlier quoted context omitted.

Supermarket and grocery store are basically synonyms in the US. Walmart would be called a superstore or box store.

I agree with your first statement, but I'd point it the other way around. I often call big supermarkets grocery stores even when I shouldn't. And I never use "superstore" or "box store". I'm fine calling walmart a supermarket.

Language is clearly missing something if we don’t have a different word for Walmart, Target, etc. versus Albertsons, Fry’s, etc. I think if the latter set are grocery stores, then the former are clearly something else.

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

#552

Post by impossiblefork »

ants_a wrote: post #64
impossiblefork wrote: post #16

Earlier quoted context omitted.

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 po…

Things like that do exist though. There's an expensive Renault with motors like this, there's also the MW Motors Luka.

MW Motors eventually made a version where the electric motors were moved from the wheel hubs to a more conventional arrangement, so presumably they felt that it was some sort of problem, but they still make the original version and I've never been in one, so I can't be sure.

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

#553

Post by ehnto »

ungreased0675 wrote: post #322
ehnto wrote: post #221

Earlier quoted context omitted.

I agree with you however I believe weight and safety are in a complex relationship right now, which has nothing to do with performance and handling. Unfortunately I feel much less safe in a Fiat 500 when a significant portion of cars in the road weigh nearly 3 tonnes and perhaps can't even see me. I suspect most people are in SUVs because they're the pragmatic trade off between safety and convenience, not because the…

I wonder if larger/heavy non-commercial vehicles were taxed at a very high rate, would more people choose Fiat 500 sized cars?

In Japan there's a subset of cars called Kei or small cars, and they're very popular due to the lower tax, initial cost, fuel consumption and ease of parking.

In states of Australia registration is more expensive depending on the amount of doors and cylinders your car has. This doesn't seem to stop big cars being popular though, the #1 selling car in Australia is the Ford Ranger (which is BIG in Australian car standards). We're working on getting F150s sized vehicles even more heavily taxed, they aren't seeing wide adoption here and they're pretty highly criticised.

In cities like Rome you can see many small cars due to the nature of their streets and parking.

For highway driving these cars are a bit less comfortable but honestly modern Kei cars aren't even that bad. The Fiat 500 isn't a Kei sized car but it is also a very reasonable highway and city car, it can happily do both.

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

#554

Post by [deleted] »

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".

[deleted]

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

#555

Post by oblio »

jlarocco wrote: post #485
ashirviskas wrote: post #450

Earlier quoted context omitted.

> 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.

I meant fast ebike.

Bikes should be allowed on shared use pathways and all sidewalks larger than 2m should by default also allow bikes.

Mopeds should be banned and fines should be big, to discourage that kind of use.

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

#556

Post by oblio »

nandomrumber wrote: post #525
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…

It’s only one step away from full zero road deaths. I propose that in order to be able to leave your house people should have to have a valid reason, have done a course, and apply for a single-use permit. Because, obviously, people can’t be trusted to do the right thing, ever, and one death in the community, for any reason, ever, is too many.

I'm talking about Dutch style safety measures.

Fairly sure the Netherlands is a more advanced democracy than the "my freedumbs" US is at this point.

And Dutch infrastructure is also better.

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

#557

Post by xandrius »

mrguyorama wrote: post #459
xandrius wrote: post #426

Earlier quoted context omitted.

Sorry for the ignorance, what what does "balancing a check book" mean? Is that an euphemism or an actual activity? I can of course look up but interested in continuing the conversation.

"Balancing the check book" refers to the process of running your own log of check transactions using something like https://cdn.wallethub.com/wallethub/images/posts/14483/check... and ensuring that it matches the occasional official balance statement from your bank occasionally. Don't want to make assumptions about what you know so forgive any overexplanation... It is about ensuring that you manage your account balan…

Cool, thanks for the overexplanation.

I thought checks were things of the 80s or something, in other parts of the world you mostly either have the money or not, so the act of balancing checks wouldn't exist.

Interesting. Is it still that common to use checks as opposed to just a debit card?

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

#558

Post by jcims »

larkost wrote: post #507
jcims wrote: post #46

Earlier quoted context omitted.

Better for robotics as well.

This may or may not be generally true. The needs around motors in a robot are more about control than raw output (some output is certainly needed). It is possible that this advancement in manufacturing will benefit there, but it is not assured by the information at hand.

Depends on the application to an extent but I agree there's not enough information available to be sure.

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

#559

Post by gcanyon »

ChrisMarshallNY wrote: post #159
gcanyon wrote: post #136

Earlier quoted context omitted.

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.

Looking at the picture, it looks like there may be a liquid input (cooling). Even a very efficient motor is going to need cooling (and lubricant).

That almost seems like cheating. Like the very very old joke where the guy is standing on the train station with two large briefcases beside him, talking on an impossibly small cell phone (this was a joke around 1995). Another man walks up to him as the guy ends his call and says,

"That cell phone is amazing! So small!"

"And it only weighs four ounces" the man replies proudly. "I sell them, if you're interested. They're $500, but you can talk for over 8 hours."

"I'll take it!" the other replies, and hands over the cash.

The man pulls a small box out of his jacket and says, "Here's your phone and cable," then picks up one of the briefcases, struggling with the weight, "And here's your battery."

All to say, claiming the lightest most powerful electric motor without at least mentioning how big/heavy the cooling system is seems wrong.

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

#560

Post by catapart »

ImPostingOnHN wrote: post #521
catapart wrote: post #487

Earlier quoted context omitted.

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 d…

I would tend to agree with the other poster that a 10lb reduction, or even a 20lb reduction, is pretty insignificant when it comes to modern consumer cars.

Right on. Buy a car with a heavier motor, then.

I took this out to the shop floor yesterday and asked the guys what they could do with 10 fewer pounds in the leafs we have around, and believe me - I'm so much less excited about being vindicated in this thread, than I am about the ideas they came up with. Mostly nonsense, but there's some interesting stuff in there that I can't wait for them to try out!

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