6 ms·

Yangwang U9 Xtreme hits 308mph(496km/h), becomes fastest production car

35 points by SoKamil 1y ago

eastbound 1y ago
There’s enormous debate about the 511km/h record measurement at Le Mans, so let’s wait until this is cross-checked by competitors ;)
bamboozled 1y ago
https://www.youtube.com/watch?v=aD9v1WyAgLA https://www.youtube.com/watch?v=aD9v1WyAgLA Also For anyone who wants to watch a lap of nurburgring, it's absolutely insane...https://www.youtube.com/watch?v=td_c1zeEn2Q https://www.youtube.com/watch?v=td_c1zeEn2Q
- Fade_Dance 1y ago
  Another truly insane electrified lap - Porsche 919 lap, at under 5.5 minutes! https://m.youtube.com/watch?v=PQmSUHhP3ug&pp=ygUYcG9yc2NoZSBudXJlbWJlcmcgcmVjb3Jk https://m.youtube.com/watch?v=PQmSUHhP3ug&pp=ygUYcG9yc2NoZSB...
  - HarHarVeryFunny 1y ago
    That's insane! I'm guessing the weight of the drivers balls is limiting factor here. Any lighter and the car would not be able to go so fast.
    - Fade_Dance 1y ago
      It was actually a bit limited by the gearing/transmission. The car can go faster... Granted, what that essentially means is that the engineers went "balls too big, let's cap this in case the tires explode or the car flies off the track."
      - HarHarVeryFunny 1y ago
        Wow! Seriously though, the driver is putting it all on the line here. Driving a brand new car balls-to-the-wall at 300mph around a curvy race trace ... it's basically like being a test pilot with no parachute or margin for error.
- yummypaint 1y ago
  I haven't done any math to check if this is actually possible but it sure sounds like it spins the tires near 100 mph on a few occasions
bob1029 1y ago
> Total kerbweight stands at 2,480kg > 308mph This car has more kinetic energy than a fully loaded semi truck traveling at 70mph.
lillecarl 1y ago
The real technological marvel here is the tire manufacturers. I took an RC car (Traxxas Rustler 4x4) designed for 11.1V(3s) and strapped a 22.2V(6s) system to it, upgraded all transmission parts and it holds up well. However you can't go full throttle without full ground contact (and barely even then) without shredding the tires into atoms. I've tried reinforcing with glass fibers and various glue compounds but it always finds a weak spot and propagates. I think the car does around 160kmh, I've GPSed it to 140 but since it's an off-road vehicle it just takes off at those speeds. I assume free-rolling the tires reach over 200kmh, with some napkin math the tires rotate at over 9000RPM (150 per second). Napkin AI math says the tire could experience as much as 4000G. It's honestly "easy" to build an "unlimited horsepower" car with EV technology, high-quality cells, high-voltage, expensive components takes you there, tires though...
metalman 1y ago
about 10hp/mph, and 6 lbs/hp, so the trick here is traction control. any skip,hop, or bump, that loostens up one wheel relative to the others invites wheel spin, asymetric wheel spin at 300mph, goes bad instantly for the RUD, so the software has to be every bit as good as the hardware
jpfromlondon 1y ago
The automotive quartz crisis is well under way.

35 points by SoKamil 1y ago

There’s enormous debate about the 511km/h record measurement at Le Mans, so let’s wait until this is cross-checked by competitors ;)

bamboozled 1y ago

https://www.youtube.com/watch?v=aD9v1WyAgLA https://www.youtube.com/watch?v=aD9v1WyAgLA Also For anyone who wants to watch a lap of nurburgring, it's absolutely insane...https://www.youtube.com/watch?v=td_c1zeEn2Q https://www.youtube.com/watch?v=td_c1zeEn2Q

Fade_Dance 1y ago
Another truly insane electrified lap - Porsche 919 lap, at under 5.5 minutes! https://m.youtube.com/watch?v=PQmSUHhP3ug&pp=ygUYcG9yc2NoZSBudXJlbWJlcmcgcmVjb3Jk https://m.youtube.com/watch?v=PQmSUHhP3ug&pp=ygUYcG9yc2NoZSB...
- HarHarVeryFunny 1y ago
  That's insane! I'm guessing the weight of the drivers balls is limiting factor here. Any lighter and the car would not be able to go so fast.
  - Fade_Dance 1y ago
    It was actually a bit limited by the gearing/transmission. The car can go faster... Granted, what that essentially means is that the engineers went "balls too big, let's cap this in case the tires explode or the car flies off the track."
    - HarHarVeryFunny 1y ago
      Wow! Seriously though, the driver is putting it all on the line here. Driving a brand new car balls-to-the-wall at 300mph around a curvy race trace ... it's basically like being a test pilot with no parachute or margin for error.
yummypaint 1y ago
I haven't done any math to check if this is actually possible but it sure sounds like it spins the tires near 100 mph on a few occasions

bob1029 1y ago

> Total kerbweight stands at 2,480kg > 308mph This car has more kinetic energy than a fully loaded semi truck traveling at 70mph.

lillecarl 1y ago

The real technological marvel here is the tire manufacturers. I took an RC car (Traxxas Rustler 4x4) designed for 11.1V(3s) and strapped a 22.2V(6s) system to it, upgraded all transmission parts and it holds up well. However you can't go full throttle without full ground contact (and barely even then) without shredding the tires into atoms. I've tried reinforcing with glass fibers and various glue compounds but it always finds a weak spot and propagates. I think the car does around 160kmh, I've GPSed it to 140 but since it's an off-road vehicle it just takes off at those speeds. I assume free-rolling the tires reach over 200kmh, with some napkin math the tires rotate at over 9000RPM (150 per second). Napkin AI math says the tire could experience as much as 4000G. It's honestly "easy" to build an "unlimited horsepower" car with EV technology, high-quality cells, high-voltage, expensive components takes you there, tires though...

metalman 1y ago

about 10hp/mph, and 6 lbs/hp, so the trick here is traction control. any skip,hop, or bump, that loostens up one wheel relative to the others invites wheel spin, asymetric wheel spin at 300mph, goes bad instantly for the RUD, so the software has to be every bit as good as the hardware

jpfromlondon 1y ago

The automotive quartz crisis is well under way.