Submitted 12 hours ago by kalkulat@lemmy.world to technology@lemmy.world
https://supercarblondie.com/electric-motor-yasa-more-powerful-tesla-mercedes/
Maker website: yasa.com/…/yasa-smashes-own-unofficial-power-dens…
This looks small enough to be installed within the wheel hub itself. Imagine a car with four motors, one inside each wheel. The entire floor pan could just be one thin battery, and everything above it could be passenger and storage space.
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…
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:
Converting these figures to horsepower (1 horsepower = 746 watts):
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.
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.
Stop burning the planet down to generate social media comments about shit you don’t understand
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.
1 dogpoeer obviously. /s
Americans will use ANYTHING to avoid metric.
or about the same as a small dog.
Americans will use anything but the metric system
You can talk horsepower and dogpower all day, but I won’t really understand until you translate it into bananapower, for scale.
Something something anything but metric…
For all non Brits: 1 dogpower = 1005 horsepower It’s an imperial unit. You’re welcome.
Had an ex-friend who was a motorhead arguing that electric motors will never beat ICE because they lack comparable torque. Look, I’m no mechanic, but I never got my head around that.
“You mean they don’t have enough torque to run a US destroyer?! Someone should call the Navy.”
Seriously, if you’ve played with even a tiny electric motor, provide DC, it goes, instantly. What could he have possibly been trying to say?
I think he was trying to admit he doesn’t know shit about electric motors.
What could he have possibly been trying to say?
I mean, the general appeal of ICE engines is the fuel, not the engine. Gasoline is generally more energy dense than lithium.
Nah, his complaint was lack of torque. Very strange, never got it. Figured he was repeating fossil fuel propaganda. But he was a motorhead!
And yes, energy density is the thing no one talks about when raging against fossil fuels. A gallon of refined gasoline packs insane energy. I’ve run my 5-gallon, crappy Harbor Freight generator all night into the morning, powering the camp, heaters and all, never came close to emptying it. Contrast that with a monster LIPO4 battery that died in 48-hours only powering LED lights. (Gotta admit, something weird happened there.)
“EVs lack comparable torque to ICE” - guy in my rearview mirror
He was trying to say that he spent too much time in a media bubble disconnected from reality.
My parents had an original Prius and it was a weedy little car that made those two hippies really happy. If that was his only experience with electric cars I can see why he’d think that.
But the new ones are fucking rockets. I just don’t understand why they need all that. Can they make a cheaper one that’s got 300 horsepower?
I put my hybrid into sport mode when I actually need the acceleration, like quick highway merges or cramped city turns in traffic. If I kept it in eco mode like I normally do, or even just normal mode, the acceleration would be limited and I’d either be unable to merge or would cause an accident.
Yeah drivers in my area are shitty, I know. Unfortunately I can’t flip a switch and change their behavior.
Also sometimes it’s just plain fun to go zoom (when safe, obviously).
. I just don’t understand why they need all that.
Power sells, they can give that insane 0-60 sprint for very low cost, so it gets people to buy their product instead of a 6 liter V8.
I need to torque a shit
My eScooter weighs 42 pounds.
A 28 pound motor that’s 750 kW?
Holy fuck.
That’s power density straight out of science fiction
If we put electrified tracks down we could all drive ridiculously overpowered tiny traincars.
Maybe we can also have them drive themselves and link them up for more efficiency also have them as a service so not everyone has to own their own and we can reduce overhead on servicing and infrastructure and … trains.
but then u cant splatter pedestrians and cyclists on the pavement like overmicrowaved hotpockets or ram the car in front of u for not going fast enough or brake check the one behind you for being to close or…
Ah good thing the batteries are not the heavy part of the syatem otherwise this would be awkward.
This motor weighs 12.7 kilograms and has 1000hp. How much does a comparable motor weigh?
There is a 1000 hp tesla with 3 motors that all together weights about 450 killograms, this seems to support your idea until you look at how much the batteries weigh…
The batteries are 550 kilograms to start, and are generally considered to not be big enough. So yeah, great they solved the issue that no EV had (EVs always had lighter motors, and very heavy batteries).
Doomer comment
1000 hp = 0.75 MW. If 98% efficient that’s 15KW of heat dissipation Sounds like a subsystem bigger than the motor.
Yep, I noticed that, you’re right. And that’s near-miraculous efficiency. The maker’s website sez: “YASA also estimates that its all-important continuous power will be in the region of 350kW-400kW (469bhp-536bhp).” It also sez: "To achieve a 750kW short-term peak rating and a density of 59kW/kg … " Devi’ls in the details … The image on the ‘superblondie’ page shows A LOT of cooling built into whatever metal that is: supercarblondie.com/…/YASA-tiny-electric-motor.we…
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.
Once I figured out it was an axial flux prototype motor this whole article made sense.
Nerd
Anything but metric!
1000 horses sounds cooler than 735 electrical pixies a second.
But horses are measured in hands, average of 16 hands so 16000 hands, 8000 people. That’s like 1 electrical pixie per 11 people
And somehow also more impressive than one Zeus per minute
Horsepower is a pretty standard way to advertise things in the automotive industry…
But it should be kilowatts. There’s no reason not to use the standard metric for power, it’s unnecessary fragmentation of figures
Well the metric version is about 1014 PS, but honestly the difference between horsepower and pferdestärke is pretty negligible.
Sadly “745 kW” doesn’t sound as cool as “1000 horsepower.”
I’m gonna slap one on my fixie.
Having a powerful motor is nice, but you still have to power it.
Hopefully the numbers are correct. The article however is shockingly terribly written.
Ah they’re rating motors like they used to rate speakers?
Car engines, for probably the past 100 years, have always been advertised based on their peak power rating, not what they can produce continuously. Cars are not designed to have their accelerator peddles floored for hours on end, nor is this even possible to do, as you’d eventually hit a curve and need to slow down.
This is especially the case for high performance vehicles, which usually have more demanding maintenance requirements just from normal operation, let alone from being abused like that.
This, in a folding, commuter e-bike.
*guns throttle* Tires liquify, blast apart, rim rapidly grinds to nothing, spokes rocket in all directions
Electric cars are already awesome but they’re just getting started. In a few years an ICE car will look like even more of a pathetic fossil (pun intended) than it does today.
Going to take more than a few years to turn this around. I highly doubt I will be able to afford a new EV to replace our 2002, 2004 and 2014 vehicles.
I was going to shit all over this thing, but if it can do ~500hp continuously that’s awesome. Wonder what kind of efficiency it has and what the cooling requirements are. That low weight puts us back into unsprung wheel motor territory, especially if it scales down well.
Oh man, continuous 500hp at each wheel. That’s nasty to think about, lol.
Every time I get a faster car I need better tyres so the wheels never spin… The fuck kind of tyres would I need to stop 1000hp at each wheel spinning?
holy shit
Psythik@lemmy.world 1 hour ago
“YASA” sounds like a mashup between YMCA and NASA. Even their logo looks like the Y’s.