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BYD builds fastest car

autotrader.co.uk

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Re: BYD builds fastest car

#11

Post by eptcyka »

nostrademons wrote: post #8
msk-lywenn wrote: post #3

Funny that it packs 3000hp while the Chiron « only » needs 1600hp to achieve mostly the same speed.

At that speed the limiting factor likely moves from raw power output to things like cornering ability on the track, grip of the tires, aerodynamics, downforce, driver skill, mechanical linkages, etc. There's a reason why all the world's land speed records since the 1930s [1] get set at the Bonneville Salt Flats or similar flat desert terrain. FWIW, the speed listed in this article was exceeded in 1937. The hard part…

For a top speed run, cornering ability is next to useless. You need grip to put down the power and be stable at speed, the corners taken for top speed runs are fairly wide. The bigger issue here is for how long can a BEV sustain max power output - it can deplete its battery in 2 minutes. EVs also can only produce top power whilst battery is at top voltage, since draining it drops voltage, max power drops with charge levels. The tyre grip itself is fine, the issue is tyre durability - they can usually last less than 20 minutes at top speed.

It is an impressive feat of engineering to get to a vmax record in a BEV.

Re: BYD builds fastest car

#14

Post by bestouff »

WillAdams wrote: post #12
bsaul wrote: post #2

The kind of things that's going to put the last nail in the coffin of the german industry (in terms of brand image).

It will be far more interesting to see how: https://electriclemans.com/ plays out.

Look at the partners section. There's Palantir in there.

Re: BYD builds fastest car

#15

Post by vjvjvjvjghv »

That's probably one of the least interesting records. Besides the tires, what's the problem reaching that speed? Need a big engine and some downforce. This is much easier than building a car that cam set a record on the track.

Re: BYD builds fastest car

#16

Post by dmix »

video https://www.youtube.com/watch?v=aD9v1WyAgLA

same car doing Nürburgring Lap https://www.youtube.com/watch?v=td_c1zeEn2Q

> The U9 was developed by German car designer Wolfgang Egger, who previously served as a head designer for Alfa Romeo, Audi and Lamborghini, and began working for BYD in 2017. https://en.wikipedia.org/wiki/Yangwang_U9

Re: BYD builds fastest car

#17

Post by AtlasBarfed »

WillAdams wrote: post #12
bsaul wrote: post #2

The kind of things that's going to put the last nail in the coffin of the german industry (in terms of brand image).

It will be far more interesting to see how: https://electriclemans.com/ plays out.

It'll be a battery swap. There was that video of emergency battery pack ejection for battery fires, then you need a loading mechanism.

I haven't tracked LeMans much, I know the Toyota hybrids have been dominating it, but is it unrestricted hybrid drivetrains? Can builders make any kind of hybrid / regen / battery size / recharge drivetrain?

If not, I'd love to see what builders can do with go-nuts hybrids: wankel compact recharging, max-solid-state chems, etc.

Re: BYD builds fastest car

#19

Post by jansan »

dmix wrote: post #16

video https://www.youtube.com/watch?v=aD9v1WyAgLA same car doing Nürburgring Lap https://www.youtube.com/watch?v=td_c1zeEn2Q > The U9 was developed by German car designer Wolfgang Egger, who previously served as a head designer for Alfa Romeo, Audi and Lamborghini, and began working for BYD in 2017. https://en.wikipedia.org/wiki/Yangwang_U9

Seven minutes for the Nordschleife? Sabine Schmitz could have done that with a van.

But honestly, ther are a Lot of production cars that went considerably faster. And the non-production Porsche 919 Hybrid EVO did it in 5:19, which is an entirely different league.

Re: BYD builds fastest car

#20

Post by tim333 »

msk-lywenn wrote: post #3

Funny that it packs 3000hp while the Chiron « only » needs 1600hp to achieve mostly the same speed.

There was quite an interesting youtube from Engineering Explained speculating it had enough power to do 400 mph. There may have been other constraints limiting things like the tyres being safe and apparently the battery only has capacity for 2 mins at full power, plus bits may overheat and the like.

(https://youtu.be/z6q7du1q2U8)

It's also interesting that the fastest time on the Nürburgring at 5 min 19 was from a Porsche hybrid with 900 hp, a fair bit quicker than the BYD which took 6:59 I think. The Porsche had a lot more downforce than the BYD.

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