Autocar 0 - 100 - 0 Test 2006

[Sharky.]

Mmm. If your tyre has no grip at all, you're going to take cruise-liner lengths of time to stop. If you had super-soft track day tyres on, you'd probably break your neck from the deceleration force.

Of course, none of that matters if your brakes are hopeless.

 

[Kent]

The second I looked at this it seemed odd to me.
I've never seen anything to indicate the Gallardo can run faster than the C6 Z06.
Also, I've never heard that a space shuttle does only 3 g's at launch... 8 g's is more like it.

None the less, an interesting comparison and good post.
Thanks for the read Scaff. 👍

 

[Dave A]

No it is around 3g's in a space shuttle take off. I think 8g's would kill you as for the Gallardo that times about right. It's the top three times that haven't been added up right. The calculator probably broke .

 

[Scaff]

The second I looked at this it seemed odd to me.
I've never seen anything to indicate the Gallardo can run faster than the C6 Z06.
Also, I've never heard that a space shuttle does only 3 g's at launch... 8 g's is more like it.

None the less, an interesting comparison and good post.
Thanks for the read Scaff. 👍

Glad you found it interesting.

In regard to the Z06 vs the Gallardo, you have to keep in mind that the 0-100-0 is quite specific discipline.

The Gallardo did beat the Z06 to the 30mph mark by 0.33 seconds, no big surprise as the 4wd Gallardo would have an advantage here. However by 60mph the Z06 had cut that in half, the Gallardo being only 0.17 seconds ahead and by 100mph the Z06 was ahead by a small margin. I have little doubt that had the run been to beyond 100mph the Z06 would have increased that lead.

Reaction time on the two cars was very similar, but the Gallardo did manage to grab a little bit back under braking. All in all the two were very close, with just 0.15 seconds splitting them.

Regards

Scaff

 

[Metar]

Here they are, Scaff. 2001 Results.

The Suzuki GSX-R1000 ran about 3.1 to 60mph, ~6 seconds to 100, and had a total of 12.3, which was the best of that day.

The pairs:

• Renault Clio Sport 172 Vs. Renaul Clio V6
• Subaru Impreza WRX Vs. Skoda Octavia RS
• BMW M5 Vs. Holden HSV GTS-R
• BMW M3 Vs. Mitsubishi Lancer EvoXII
• TVR Tuscan Vs. Mercedes-Benz SLK32 AMG
• Westfield Megabusa Vs. Caterham "Blackbird"
• Nobel M12 GTO Vs. AC Cobra 212 S/C
• Ferrari 550 Maranello Vs. Porsche 911 Turbo
• Tiger Z100
• Suzuki GSX-R1000

Some interesting notes:
The AC Cobra had bad tyres - which proves the point that tyres are the best brake-upgrade. It also couldn't accept full-throttle in 3rd (!). The Holden, however, was also pretty slow - though fast during accelleration.
The FWD Renault Clio Sport, managed to beat the 50HP-more-powerful, Mid-engined Clio V6 all the way to 30MPH, and was 0.01 ahead to 60.
The Westfield managed to beat the Caterham by 0.5 seconds during braking - even though one front wheel was quick to lock, and not the entire brake-force could be used on all tyres.

Notes to self: Never scan results from such a poor magazine. I had to manually enter power, weight, drivetrain, times, which were all available - but in small "Two-car battle" comparisons. Plus, the graphs aren't very correct - the Subie had a good 0-30 time (1.80), but the graph shows something like 2.60...

 

[Scaff]

Excellent stuff, thanks for that, +rep.

Ta

Scaff

 

[daan]

[off topic]

I think 8g's would kill you

An F16 is rated to 9G and the pilots survive.

And that's before you get into the guy that strapped himself to a rocket sled to see how much G force he could survive.

And David Purley.

Purley survived a deceleration rate 173 to 0 km/h in 66.0 cm in a crash during pre-qualifying for the 1977 British Grand Prix at Silverstone. This is equal to 179.8 g, which has been claimed to be the greatest g ever survived by a human[1]. He suffered multiple fractures to his legs, pelvis and ribs. Purley recovered to race again although confined his activities to the minor Aurora AFX series of F1 races in Britain.

[/off topic]

 

[Dave A]

Bloody hell, i didn't think the body could take that much . Anyhow just to reiterate, a space shuttle take off is around the 3g mark.

 

[Metar]

[off topic]

An F16 is rated to 9G and the pilots survive.

And that's before you get into the guy that strapped himself to a rocket sled to see how much G force he could survive.

And David Purley.

[/off topic]

I remember reading about that one in the 1978 Guinness World Records book. Wonder why the school-library keeps those...

BTW, wasn't there this James Bond movie, "Moonraker" I think it was, where the baddies tried to kill him in a centrifuge, and explained that after n (forgot the figure) G's you die? Of course, Mr. Bond saved himself seconds before it reached the deadly speed...

 

[Tornado]

2 questions:

1. What is an A1 GP car? Is it similar to the Star Mazda series?
   
2. Does the Bugatti's anchor brake (the spoiler) come up at that speed, or is it higher? I believe if the air-brake came up it would help stopping distances a little (though I have read that the Veyron can stop at 3g's at some speeds).

 

[Metar]

2 questions:

1. What is an A1 GP car? Is it similar to the Star Mazda series?
   
2. Does the Bugatti's anchor brake (the spoiler) come up at that speed, or is it higher? I believe if the air-brake came up it would help stopping distances a little (though I have read that the Veyron can stop at 3g's at some speeds).

Two answers:

1. Help yourself to some Wiki'ing, Part I. A1GP is something similar to F1 cars, but instead of different cars, all "countries" (teams are "Countries") have the same car. There's a "boost" button, which temporarily increases power, which the driver can use a certain amount of times per race. Races are in this format: Qualifying, then a short sprint-race, then the full race.
2. Help yourself to some Wiki'ing, Part II.
   

   "When the car reaches 137 mph (220 km/h), hydraulics lower the car until it has a ground clearance of about 3 1/2 inches (8.9 cm). At the same time, the wing and spoiler deploy."

Metar.

 

[Famine]

2 questions:

1. What is an A1 GP car? Is it similar to the Star Mazda series?

A1GP = The World Championships of Motorsport.

All cars are identical - 550hp, 600kg single seaters - and each car is run by a country.

A1GP

I remember reading about that one in the 1978 Guinness World Records book. Wonder why the school-library keeps those...

BTW, wasn't there this James Bond movie, "Moonraker" I think it was, where the baddies tried to kill him in a centrifuge, and explained that after n (forgot the figure) G's you die? Of course, Mr. Bond saved himself seconds before it reached the deadly speed...

A sustained 8g will knock you out, and a sustained 15g will kill you. Pilots have pressure suits to lessen the effects of high g turns, and Purley's accident (along with Ralf's Indianapolis spin) was a very short burst of deceleration. Still damn near killed him though.

 

[Sharky.]

[off topic]

An F16 is rated to 9G and the pilots survive.

They wear g-suits...

And shock! Toro hasn't heard of A1GP?

[/off topic]

 

[Dave A]

Here's a couple of links to some A1GP info...
http://en.wikipedia.org/wiki/A1_Grand_Prix_cars
http://www.travelplaces.co.uk/mr-a1-introduction.htm

Regarding the Veyron, I believe the rear wing does double as an airbrake.

These answers are like busses eh.

 

[ExigeEvan]

I remember reading about that one in the 1978 Guinness World Records book. Wonder why the school-library keeps those...

BTW, wasn't there this James Bond movie, "Moonraker" I think it was, where the baddies tried to kill him in a centrifuge, and explained that after n (forgot the figure) G's you die? Of course, Mr. Bond saved himself seconds before it reached the deadly speed...

Pulling consistent Gs without a G-suit (and at extremes with) will lead to unconsciousness, and eventually death.

You may have seen videos of trainy fighter pilots going in a centrifuge and losing consciousness. When they regain consciousness they do the 'funky chicken', basically their body jerks a few times as they come back around. Quite funny TBH.

2 questions:

1. What is an A1 GP car? Is it similar to the Star Mazda series?
   
2. Does the Bugatti's anchor brake (the spoiler) come up at that speed, or is it higher? I believe if the air-brake came up it would help stopping distances a little (though I have read that the Veyron can stop at 3g's at some speeds).

1)

Specifically, the cars have a 600kg monocoque chassis designed by Lola and model-370/660R13 slick tires from Cooper. Zytek provide a performance-limited 3.4 litre V8 engine, however its performance limitation can be overcome by the driver pressing a button on their steering wheel. This so-called boost button or overtake button increases the engine output, revs and horsepower while the accelerator remains depressed, increasing speed and facilitating easier overtaking. The overtake button may only be used a limited number of times in each race, which is pre-programmed beforehand and identical for each car.

2) Yes I believe the air brake activates under deceleration. They are pretty effective, as shown in the SLR which uses it to attain immense stopping power.

[EDIT] Wow, loads of replies.

 

[Metar]

A sustained 8g will knock you out, and a sustained 15g will kill you. Pilots have pressure suits to lessen the effects of high g turns, and Purley's accident (along with Ralf's Indianapolis spin) was a very short burst of deceleration. Still damn near killed him though.

Thanks... (And I thought mods could be rep'ed several times in a row...)

Should I punish myself for being first on that load of answers?

EDIT: And something to add (Help yourself to some Wiki'ing, Part III):

At speeds above 124 mph (200 km/h), the rear wing also acts as an airbrake, snapping to a 70-degree angle in 0.4 seconds once brakes are applied, providing up to 0.6 g (6 m/s&#178 of deceleration. Bugatti claims the Veyron will brake from 252 mph (406 km/h) to a standstill in less than 10 seconds.

 

[Tornado]

EDIT: And something to add (Help yourself to some Wiki'ing, Part III):

I thought it was a higher speed when the airbrake began working.

 

[Metar]

I thought it was a higher speed when the airbrake began working.

I guess that below those speeds, the airbrake won't be efficient enough, or could interfere with the usual use of the brakes in those speeds. On TopGear's race with the SLR McLaren, Clarkson complained that the airbrake causes the speed-drop to be too sudden. During, say, smooth highway driving, the last thing you need is that a touch of the brakes, to loose those 10MPH, will cause the car to loose lots of speed, and perhaps even get out of control... In city driving, the speeds are too low for the spoiler to be effective - Unless you're doing 0-100-0 tests in rush-hour. And on curvy mountain-roads, you'd already switch to "Handling mode" with the spoiler deployed...

 

[Famine]

I guess that below those speeds, the airbrake won't be efficient enough, or could interfere with the usual use of the brakes in those speeds. On TopGear's race with the SLR McLaren, Clarkson complained that the airbrake causes the speed-drop to be too sudden.

It's time for maths fun with Famine...

At the Veyron's top speed, there's about a half ton of air pushing back on it. It'll brake at about 0.6g just by lifting off the gas.

 

[Sharky.]

It's time for maths fun with Famine...

*childish voice*
Oh goody!
*end childish voice*

 

[ExigeEvan]

It's time for maths fun with Famine...

At the Veyron's top speed, there's about a half ton of air pushing back on it. It'll brake at about 0.6g just by lifting off the gas.

You don't commute to Swansea everyday and go by the pseudonym Peter Lucas by any chance?

 

[Famine]

You don't commute to Swansea everyday and go by the pseudonym Peter Lucas by any chance?

I'm sure there's a punchline I'm missing here...

 

[ExigeEvan]

I'm sure there's a punchline I'm missing here...

Sorry, I just have a physics lecturer that has such enthusiasm for his subject you wonder what turns him on more, a thesis on gravity or a flow diagram of a jet engine.

 

[Leonidae]

I'd go for the latter one. gravity is old stuff..

 

[Metar]

It's time for maths fun with Famine...

At the Veyron's top speed, there's about a half ton of air pushing back on it. It'll brake at about 0.6g just by lifting off the gas.

So I suppose, at the speeds where the wing doesn't deploy (below 125mph. I hate working in MPH), there's about a 100KG of air pushing back on it... And with the spoiler deployed, that's even more.

 

[Famine]

At about 125mph there's something close to 150kg of air working against the Veyron.