Hacker News Board Hacker News, browsed like a classic message board
Live data from Hacker News

0 To 100 kph in 1 second [video]

youtube.com

Post reply on HN
Print view View original

31–40 of 123 posts

Re: 0 To 100 kph in 1 second [video]

#31

Post by onetimeuse92304 »

reactor4 wrote: post #26
onetimeuse92304 wrote: post #18

I would suggest that if you are allowed a fan that sucks air from under the car then you can easily achieve pretty much any acceleration. The reason F1 cars do not do this is because suction is limited in F1 for very specific reasons and it goes back to the fatal crash of Ayrton Senna. Basically, a car that relies too much on suction is unsafe to drive because any failure can throw the car out of track with fatal con…

Ground effect was used in F1 between 1978 and 1982. Ayrton Senna died in 1994.

Senna died when his car lost downforce due to mechanical fault.

Re: 0 To 100 kph in 1 second [video]

#34

Post by pmontra »

reactor4 wrote: post #26
onetimeuse92304 wrote: post #18

I would suggest that if you are allowed a fan that sucks air from under the car then you can easily achieve pretty much any acceleration. The reason F1 cars do not do this is because suction is limited in F1 for very specific reasons and it goes back to the fatal crash of Ayrton Senna. Basically, a car that relies too much on suction is unsafe to drive because any failure can throw the car out of track with fatal con…

Ground effect was used in F1 between 1978 and 1982. Ayrton Senna died in 1994.

Some form of ground effect has been in use in every single year since then. There are aerodynamic devices that channel air below the car, that keep confined there with vortices running along the car, that extract the air from behind. They even removed some limitations at the beginning of 2022 and they can run with a flat bottom now.

Re: 0 To 100 kph in 1 second [video]

#35

Post by refurb »

canbus wrote: post #10

impressive, but as I've witnessed a top fuel dragster do 0-320mph in just over 3 seconds (meters away from me!), think I am a bit desensitised.

I had a chance to stand on the track with a pro-dragster.

It was more like an explosion than a car accelerating. Suddenly a ton of noise you could feel in your chest and then it's gone.

Re: 0 To 100 kph in 1 second [video]

#36

Post by yodelshady »

canbus wrote: post #10

impressive, but as I've witnessed a top fuel dragster do 0-320mph in just over 3 seconds (meters away from me!), think I am a bit desensitised.

It's much more impressive to me seeing it be done on a basically Formula Student++ budget. I'm sure the same team could make a very fast ICE car, and that would be impressive too.

I've seen Ford make a similarly fast electric mustang-chassis dragster, and yeah, that's a bit... unsurprising, really? You know how much force you need, ergo how much torque, translating that into a motor is not hard, translating that into a current is not hard, translating that into cabling is not hard. It's much more a set of composable sub-problems, and unlike engines, most of those sub-problems can't explode.

Re: 0 To 100 kph in 1 second [video]

#37

Post by School-Cotton »

gkfasdfasdf wrote: post #32

There is an electric production car that does 0-60 in 1.4 seconds using ground suction as well. Carwow has a great video: https://youtu.be/TptzkkbC1vE?si=9P8a4lO3dh1bbGg5

Miles or kilometers? (60 miles is about 100 km, so I assume you meant miles).

Re: 0 To 100 kph in 1 second [video]

#39

Post by lathiat »

Kiro wrote: post #2

Don't snowmobiles and jet-skis do 0-100 in a couple of seconds? Why don't they provoke this kind of reaction?

I think you’re wrong there. There are snow mobiles that do 0-100 in 1-3 seconds but they are all crazy special built machines like this.

4-6+ seconds is much more typical for a normal unit. Which is similar to normal-ish 200kW sports cars. A bit fast but not breath taking.

Re: 0 To 100 kph in 1 second [video]

#40

Post by dijit »

onetimeuse92304 wrote: post #18

I would suggest that if you are allowed a fan that sucks air from under the car then you can easily achieve pretty much any acceleration. The reason F1 cars do not do this is because suction is limited in F1 for very specific reasons and it goes back to the fatal crash of Ayrton Senna. Basically, a car that relies too much on suction is unsafe to drive because any failure can throw the car out of track with fatal con…

See also: the "Fan Car" that was not banned but would have been;

https://www.youtube.com/watch?v=BOxlKfcSs5o

Post reply on HN