@ZirothTech

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Some great comments here adding to the video, here is a summary:
1) Correction at 2:34 - This is not an exponential growth it is a curve with an exponent of 2 (quadratic) - I loosely and inaccurately used the phrase here!
2) The paper at 8:00 uses Celsius to report a percentage drop, which isn't very useful as it's a relative term.
3) I compared RPM as all the motors have similar geometry (automotive size) - but really this forgets the importance of the radius (which needs to be large enough to get some torque from the motor)

@gfresh353

Title is hyperbole. You took almost ten minutes to tell us Bugatti uses cooling oil in direct contact with the batteries. Bravo.

@mvez10

Thanks to all the comments for saving me 9 min, i was here for the physics portion of this video. glad to save some time.

@umountable

The force is going up quadratic and not exponential. Thats a HUGE difference :D

@6alecapristrudel

"26% lower temperature, 54 vs 40 degrees C."
Me: ~Screams thermodynamically~

@32BitJunkie

Energy density is NOT how fast a battery can discharge, that's C value. Energy density is the ratio of energy to volume

@markotrieste

A tip: instead of comparing RPM, compare peripheral speed. Speed to material strength ratio is constant wrt size, while RPM have an inverse relation to size (for the same material strength).

@irinaratushinskaja7900

Two (semantic-ish) points: It's not exponential if it goes by the square. And saying "temperature is 23 percent lower/higher" is basically absurd as it's scale-variant.

@devinbrockman8886

I totally get that some folks aren't into all the details, but personally, I find them super helpful! Keep doing you!

@royh6526

Nowhere do you explain the "bend physics" statement. Tesla uses carbon fiber wound rotors and presumably so does Bugatti. Liquid cooling of batteries is likewise not new. The only part was the magnetic path which seems to be different from each company, and an area of great concern as each company strives for the optimum configuration. Still how does this "bend physics"?

@johanfolkesson5170

1: Quadratic, not exponential.
2: That gives 44% increased force, which does not round to 50%.
3: In relation to what? I didn’t find any mention of the rotor diameter, or any other meaningful comparison.

@brunonikodemski2420

We did fluid cooling of electrical drives back in the early 70's, using the absolutely best Types available, which were various PCBs.  We did railroad engines, and had a ten-ton military 6-wheel truck as a test vehicle.  Did ships drives, and wind turbines.  However, the PCBs were found to be carcinogenic, had to be removed, and the alternate fluids, typically antifreezes or light silicones, had all sorts of secondary problems, and were highly inefficient.  These projects were dropped by us, but the computer industry, and the heat-pipe industries started to use these techniques with volatiles, and these worked quite well.  Change-of-state cooling is also very effective.

@ironman5034

Feels like a clickbait, where is the physics bending?

@titastotas1416

The pedantic- the motor does not bend physics, the physics bends it.

@fintux

4.1 C to 1.0 C is not 76% reduction. They are degrees, not absolute temperatures. You can only use them for delta temperatures that way, say the coolant is 0 C, then yea you can say delta-T dropped 76%. But 0 C is not the absolute zero. Easy check: convert the units to Fahrenheit and do the same math. The drop would be from 39.38 F to 33.8 F, thus 5.58 F drop which would be 14.2% reduction. If changing units yields different results, then the math is wrong - like is in this case.

An easier "reality check": if temperature went from +1 C to -1 C, how much would the percentage drop be? 200%? It's not possible, you cannot lose 200% of temperature.

Nice video nevertheless, just wanted to address this (relatively common) error.

@weshoward1984

If you want real physics bending technology look no further than Koenigsegg's "Dark Matter" electric motor that makes 800hp and 922 lb ft tq (1250nm) all while weighing under 40kg (88lbs)

@diamondsolo

Koenigsegg did that but with 250kw output a year ago. Less weight , higher performance.

@Geek-A-Hertz8707

the semiconductor industry had 50,000 rpm motors back in the 1990s, so the auto industry still has a long way to go.

@Pr0toPoTaT0

Dont hate me for skipping your ad ❤ video was too damn cool to not get right back to it

@powerbuoy

They probably have a large ultra capacitor pack to reduce the impact on the battery and allow for rapid discharge.