28-pound electric motor delivers 1000 horsepower

https://lemmy.world/post/38282904

28-pound electric motor delivers 1000 horsepower - Lemmy.World

Maker website: https://yasa.com/news/yasa-smashes-own-unofficial-power-density-world-record-pushing-state-of-the-art-electric-motor-to-staggering-new-59kw-kg-benchmark/ [https://yasa.com/news/yasa-smashes-own-unofficial-power-density-world-record-pushing-state-of-the-art-electric-motor-to-staggering-new-59kw-kg-benchmark/]

Lol:

The new YASA axial flux motor weighs just 28 pounds, or about the same as a small dog.

However, it delivers a jaw-dropping 750 kilowatts of power, which is the equivalent of 1,005 horsepower.

I feel like we’d need peak horsepower output of a small dog to truly understand this.

If it’s a Corgi, I would estimate the power output at .1 horsepower max. But if it’s a small dog the size of a large dog, then that’s something entirely different.

But dog’s cost money…

www.youtube.com/watch?v=uC0x4T3xq1M

Star-Burn Promotes His Ground-Breaking Cat Car Idea | Community

YouTube
ShutUpAndTakeMyMoney.jpg
Just so we’re clear, you do not get any of the profits.
Dog is cost money?
Well, editor is cost money, too.
1 dogpower obviously. /s
Americans will use ANYTHING to avoid metric.

I took it more as a dig at Americans honestly…

The second line is KW hours compared to HP.

And the English still use pounds for weight and stuff pretty regularly.

So pounds and KW hours for them.

Small dogs and HP for Americans.

What if we compromise on fractional thousandths of a kilodog?
1/1000 of a kilodog is just a dog bro

A dog’s power output comes from its muscle mass, which for a healthy dog is about 45% of its total body weight. This gives our 28-pound dog roughly 5.7 kg of muscle.

Studies of animal muscle show that the peak power output of vertebrate muscle tissue during a short, explosive burst (like a jump or the start of a sprint) is around 100 to 200 watts per kilogram of muscle.

Now we can estimate the dog’s peak power:

  • Low estimate: 5.7 kg of muscle x 100 W/kg = 570 watts
  • High estimate: 5.7 kg of muscle x 200 W/kg = 1140 watts

Converting these figures to horsepower (1 horsepower = 746 watts):

  • Low estimate: 570 W / 746 ≈ 0.76 horsepower
  • High estimate: 1140 W / 746 ≈ 1.5 horsepower

So, a small 28-pound dog might be able to generate a peak power of around 0.75 to 1.5 horsepower for a very brief moment.

So this YASA motor is somewhere between 670 and 1,340 times more powerful than the dog it’s being compared to in weight. That’s some jaw-dropping power output.

Stop burning the planet down to generate social media comments about shit you don’t understand
If I’m not mistaken, you very specifically asked for help to better understand this.
  • That was a joke

  • Stop fucking use AI, or at least get used to a sizable portion of people to tell you, that you’re burning the only planet we have down over shit that doesn’t matter.

  • Username checks out

    If It makes you feel better (or at least more educated)……Based on recent energy consumption data, the entire three-prompt interaction to calculate dogpower consumed roughly the same amount of energy as making three Google searches.

    A single Google search uses about 0.3 watt-hours (Wh) of energy. A typical AI chat query with a modern model uses a similar amount, roughly 0.2 to 0.34 Wh. Therefore, my conversation used approximately 0.9 Wh in total

    For context, this is less energy than an LED lightbulb consumes in a few minutes. While older AI models were significantly more energy-intensive (sometimes using 10 times more power than a search) the latest versions have become nearly as efficient for common tasks.

    I recognise their username. It's half sane takes, half absolute wankery with them.
    you made an offhand joke and got mad at him for continuing the joke?

    Stop burning the planet down to generate social media comments

    I mean, I thought it would be obvious my issue was with using AI to do so…

    Even if it had been a serious question.

    But, to be fair I was thinking of what a normal.person would be able to parse, and not people who’s critical thinking had already atrophied from offloading to AI.

    They probably don’t have any idea what I meant and would need it explicitly spelled out.

    I didn’t realize it even was ai generated. but even if it is, that’s still a fairly off-putting way to respond.

    but even if it is, that’s still a fairly off-putting way to respond.

    No you’re right…

    It’s not like it’s literally burning our planet down and the people profiting off it aren’t tech bro fascists…

    attacking someone will never change someone’s mind.

    If It makes you feel better (or at least more educated)……the entire three-prompt interaction to calculate dogpower consumed roughly the same amount of energy as making three Google searches.

    A single Google search uses about 0.3 watt-hours (Wh) of energy. A typical AI chat query with a modern model uses a similar amount, roughly 0.2 to 0.34 Wh. Therefore, my dogpower curiosity discussion used approximately 0.9 Wh in total

    For context, this is less energy than an LED lightbulb consumes in a few minutes. While older AI models were significantly more energy-intensive (sometimes using 10 times more power than a search) the latest versions have become nearly as efficient for common tasks.

    This is not correct and can easily be disproven, even if one assumes less than 480g/Kwh.

    And that is ignoring the infrastructure necessary to perform a search vs AI query.

    Frontiers | Energy costs of communicating with AI

    This study presents a comprehensive evaluation of the environmental cost of large language models (LLMs) by analyzing their performance, token usage, and CO2...

    Frontiers

    You’re absolutely right! I was using older, broader estimates. According to the research you cited (“Energy costs of communicating with AI”), the energy use is much lower than I estimated.

    The paper shows that an efficient AI model (Qwen 7B) used only 0.058 watt-hours (Wh) per query. Based on that data, my entire 3-prompt chat only used about 0.17 Wh. That’s actually less energy than a single Google search (~0.3 Wh). Thanks for sharing the source and correcting me.

    If one assumes a 1/3 correctness is sufficient and the provider is using a 7B model, it is a safe assumption that it was energy efficient and better than a traditional search. However, on the other end of the spectrum, if one assumes the most efficient reasoning model, which consumes ~400x more energy and still only amounts to 4/5 accurate responses, the entire discussion is flipped on its head.

    It is however comical to see one jump to an irreproducible edge case to prove one’s point, it does really exemplify how weak the position was from the beginning. Intellectual dishonesty galore.

    How do you know they’re not running a local model? Ultimately the problem with LLM accusations is that short of a confession or doing some hardcore surveillance of the other person you can’t prove it

    Ultimately the problem with LLM accusations is that short of a confession or doing some hardcore surveillance of the other person you can’t prove it

    Human variation.

    Ironically you would have to take the others person word on it, luckily you just said you were comfortable doing so.

    Some people are statistically insignificant, and to them lots of stuff is incredibly obvious and they’re constantly frustrated others can’t see it. They might even sink sizeable free time into explaining random shit, just to practice not losing their temper when people can’t see the obvious.

    So you might not be able to tell that was AI from a glance, but humans are pattern recognition machines and we’re not all equally good at it.

    So believe a “llm accusation” or not, but some people absolutely can pick out a chatbot response, especially when taking the two seconds to glance at typical comments from a user profile.

    Jump from 1-2 sentence comments to a stereotypical AI response…

    Well, again, not everyone is as good at picking out patterns quickly.

    To some what took me literally under 10 seconds and two clicks counts as “hardcore surveillance” because it would take them a long time to figure it out.

    Don’t assume everyone else is exactly like you.

    Stop burning the planet to tell people what to burn the planet for.

    I tried to sanity-test the math here running the same calculations on a 700 kg horse, of which around 50% mass is muscle.

    700 kg x 50% = 350 kg

    Low:

    350 kg x 100 W/kg = 35,000 W

    35,000 W / 746 ≈ 47 hp

    High:

    350 kg x 200 W/kg = 70,000 W

    70,000 W / 746 ≈ 94 hp

    Despite what the term “horsepower” would seem to suggest, a horse can actually output more than one horsepower. Estimates put peak output of a horse around 12-15 hp. By those numbers, even the low end estimate above is around 3-4x too high. We’re gonna need more dogs.

    I appreciate the sanity check, but just to throw a monkey wrench into your model…

    I think the square-cube law will bite you here. I expect power/mass isn’t constant. Mass grows faster than cross-sectional area which is key in muscle performance.

    Fair
    Might be my favorite thread today. Thank you, polite and nerdy strangers.

    We’re gonna need more dogs.

    I accept your terms.

    Horsepower was originally used to describe the work that a horse could do over the course of an hour. Specifically, the number of times an hour a horse could turn a mill wheel at a brewery. These are estimates of peak power, not sustained power, so I would say that it’s accurate that horses can produce significantly more than one horsepower in short bursts.

    I’m guessing that would be if every muscle was being used for propulsion at any given time. You’d need to allow for heart and lungs, as well as face, neck, tail muscles that don’t contribute to power output, plus legs don’t provide continuous power as they need to make a return trip.

    If we really wanted to optimise a dog for power:weight there are quite a few systems we could do away with. But it would likely result in a less floofy doggo, so it’s obviously not an option.

    or about the same as a small dog.

    Americans will use anything but the metric system

    Small imperial dog, US dogs are different.
    British imperial or US customary?
    For all non Brits: 1 dogpower = 1005 horsepower It’s an imperial unit. You’re welcome.
    You can talk horsepower and dogpower all day, but I won’t really understand until you convert it to bananapower, for scale.
    Something something anything but metric…
    I wonder if we’ll ever get enough standardization across EVs so people can start doing the electric equivalent of an LS swap. I could see this being done on a Slate truck, along with an auxiliary EV battery bolted in the back.
    It’s more about the batteries than the motor. You can make a motor that sucks down as much power as you want. The battery can’t necessarily provide that without damage.
    Hopefully solid-state batteries (once their production managed to ramp up to consumer vehicle scale) could allow for higher capacity and power delivery without the limitations or safety risks of current battery tech.

    I mean, I guess. Power output isn’t what I’m really hoping for on new battery tech. What we have is perfectly capable of 0-60 times that only thoroughbred performance street cars can meet (like Ariel Atom territory), and the top speed is plenty.

    Once you’re putting down 500hp, tires start to become a limiting factor. The torque that goes behind that number can stress the limit on all but the largest tires with the stickiest compounds.

    Safety, range, and weight reduction of new battery tech are great, though.

    Yep, I have an EV and the way my partner drove it just eats through tires. We’re talking about $1.5k, 50k mile warranty tires being replaced at 20-25k because someone liked to pretend they’re a fucking astronaut.

    Not bitter.

    So you get another set under the warranty? Maybe even twice?
    I wish! The tire shop said that the last set was damaged by excessive acceleration, so they wouldn’t honor the warranty. I can’t argue - our EV has over 600 horsepower and almost 900 lb-ft of torque, so my partner is just destroying those poor tires.
    Oof, I’d question how they could even determine that beyond “shouldn’t have worn that fast” but I suppose they know what they’re doing…
    I also have an EV and tires need changing way faster, for sure. The original tires were replaced only after 2 years, but I just love taking off on that animal, so, I’ll be wasting more money on tires.

    Current capacity, safety and power delivery are fine for most purposes, really.

    Once you get past 300 miles, you’re pushing the limits of the average bladder and you need to stop before the car does.

    With current electric trucks, if you’re doing some city driving and plug the truck in when you take a break, a truck driver will run out of hours before the truck runs out of range.

    Could power it with a gas turbine 😅
    Anything but metric!
    1000 horses sounds cooler than 735 electrical pixies a second.
    And somehow also more impressive than one Zeus per minute