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      06-15-2010, 07:55 PM   #23
jeremyc74
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Quote:
Originally Posted by Freakazoid View Post
bugatti is an aerodynamic dream
No, it's an aerodynamic NIGHTMARE.

The Veyron was introduced by the head of VW before the engineering team had a chance to evaluate it the styling. After he made the claims about 250MPH in public they all freaked out because the thing was a brick. The concept got tweaked, and they still needed 1000Hp and a special low drag mode to meet the target top speed. If you tap the brakes once on the way to 250MPH the spoiler pops up, and you have to stop and insert the key in the door to reactivate it.

Quote:
Originally Posted by Gordan Murray
Designing a rear mid-engine supercar is never a simple task and a car with 1001 hp [metric horsepower] multiplies the normal design and development problems by a large factor. The Veyron's design team must be applauded because the starting point was so wrong. Arbitrary targets of 1000 hp and 250 mph and 0-60-mph in under 3 seconds were set at the very beginning of the program. But worse still, a styling model was shown and accepted! This is a bad starting point for any car, but for a high-performance car, it's a disaster.




The Veyron team has done wonders to get where it has today. I can identify with them to a certain degree because with our SLR program, we were also given a "show car" as a starting point — the exception was that we had well researched targets for market positioning, a performance envelope and, most important, an agreed definition of what the car was trying to be. I've probably been a little spoiled in my 40 years of car design where — the SLR apart — every project was absolutely focused with targets and vehicle character totally clear before a model or prototype was even begun. (Nothing in the automotive industry has its function and targets more clearly defined than a Formula 1 car.)


When designing a car, I like to do a large amount of aerodynamic "block studies" — this being the basic size of the car with a cabin shape derived from engineering and packaging studies. The block model incorporates representative internal airflow for cooling. This process determines air entry and exit holes, along with the basic shape of the car so styling can begin.

As the drag increases as a square of the speed, the power requirement increases as a cube of the speed because the power itself is speed-dependent. The Veyron because of its high CDA figure and huge cooling drag needs 1001 hp to go 12 mph faster than a McLaren F1 producing 627 hp. To help understand the problem of starting a car program from a weak point aerodynamically, we do some calculations: A turbocharged F1 producing 1001 hp would achieve 281 mph assuming the same drivetrain efficiency. Another way of looking at this equation is that an F1 would need "only" 740 hp to reach the Bugatti's top speed. All this demonstrates just what an uphill struggle the Bugatti team faced to achieve their targets.

Very high top speeds in road cars produce some other very challenging problems. Some are small, such as keeping the windshield wipers attached to the glass, preventing the centrifugal force from opening the tire inflation valves and making the side mirror mounts torsionally stiff enough not to rotate at Vmax. Then there are much more serious high-speed problems such as a partially open side window being sucked out from the very low local pressure caused by the air accelerating around the A-pillar. Tire designers can design for very heavy vehicles or very high speeds but a combination of the two is a massive challenge. A Bugatti Veyron fully loaded and with aerodynamic load is in the order of 2½ tons at 250 mph!
http://www.roadandtrack.com/tests/da...upercar_page_2

Last edited by jeremyc74; 06-15-2010 at 08:11 PM.
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      06-16-2010, 03:12 AM   #24
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^^ Thanks. I was going to reply to freakazoid to tell him otherwise, but looks like you've got that covered.
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      06-16-2010, 09:31 PM   #25
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The Veyron is nice, but I am certain none of us can afford one. GTR for the win!
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      06-21-2010, 08:30 AM   #26
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Quote:
Originally Posted by kaykay View Post
Damn Russians are out of their minds. Love it.
I have many russian friends. and the least to say, they are not fearful; that includes cheating on exams in colleges and universities.
You got to give that GTR some credit of being that fast! that is rocket fast!
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      06-21-2010, 09:18 AM   #27
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Neither the gt-r nor the veyron are fast enough to outrun their ugliness
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      07-27-2010, 03:22 PM   #28
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      07-27-2010, 09:24 PM   #29
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Hmmm, I think the GT-R and Veyron are gorgeous....
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      07-27-2010, 09:41 PM   #30
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Quote:
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V-tec kicked in yo, for the GTR, in the end of the video.
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      07-27-2010, 10:15 PM   #31
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that was awesome. good thing i had my jizz rag near otherwise my screen would have been soaked
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      07-27-2010, 11:59 PM   #32
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ive had my mind set on the gtr being my next car. Even if a stock gtr cant come even close to a veyron, at least I can say theres at least one in the world that can smoke one.
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      02-04-2011, 01:59 PM   #33
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it s Joke????????
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      02-04-2011, 02:06 PM   #34
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      02-04-2011, 03:08 PM   #35
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what mods were done to the gtr?
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      02-04-2011, 03:14 PM   #36
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Quote:
Originally Posted by greek335xi View Post
what mods were done to the gtr?
P800 PKG
800 HP PUMP GAS PKG

Godzilla lives up to its name with a Switzer P800 kit installed. These cars are ready and able to chase down anything on the road, from exotic Italian supercars to the fastest streetbikes around, the Switzer P800 GTR Nissan is the ultimate pump-gas performer - yet remains smooth enough to drive every day.


• SWITZER FUEL INJECTOR KIT
• ELECTRONIC BOOST CONTROLLER
• SWITZER MONSTER INTERCOOLER KIT
• SWITZER UPGRADED TURBOCHARGERS (req's good cores)
• HIGH-PRESSURE WASTEGATE ACTUATORS
• SWITZER P800 CALIBRATION FOR COBB AP
• SWITZER MAF / INTAKE AND FILTER ASSEMBLY
• SWITZER HIGH-FLOW TURBO INTAKES FOR SWITZER MAF
• SWITZER OFF-ROAD TEST PIPES
• SWITZER FUEL SYSTEM UPGRADE
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      02-05-2011, 02:01 AM   #37
michaelthepsycho
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GT-R > Veyron. The Bugatti's a great bank statement but one ugly-ass vehicle.
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      02-07-2011, 12:23 AM   #38
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that gtr is amazing. it pass the veyron like the veyron is standing still.
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      02-07-2011, 09:08 AM   #39
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veyron is a waste.
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      02-07-2011, 12:13 PM   #40
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You did notice the second race where as speed built up the Veyron definitely held the upper hand and will probably have pulled well clear if the driver hadn't have backed out of the throttle, in both races it takes balls to keep the hammer down in such conditions and even more so when driving something that cost as much as the Veyron.

Also you must remember that the Veyron is a very civilised motor in which your wife, mother or ever grannymother could drive to the shops without any trouble, plus it's very refined and quiet, all things that could be said about this particular GTR or any GTR capable of matching it's speed.

It's still the daddy and this other video shows



though only just.
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      02-07-2011, 02:28 PM   #41
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Quote:
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Also you must remember that the Veyron is a very civilised motor in which your wife, mother or ever grannymother could drive to the shops without any trouble, plus it's very refined and quiet, all things that could be said about this particular GTR or any GTR capable of matching it's speed.
though only just.
I dont expect a 1M dollar car to lose under any situation especially on road. In that sense Veyron is disappointing.
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Last edited by Robert; 02-07-2011 at 02:34 PM.
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      02-07-2011, 02:42 PM   #42
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no nitros? WTF
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      02-07-2011, 02:48 PM   #43
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Quote:
Originally Posted by Robert View Post
I dont expect a 1M dollar car to lose under any situation especially on road. In that sense Veyron is disappointing.
My point was that VW didn't want to 'just' build the fastest supercar, if that had been their sole goal then it could have been even quicker but they wanted to be be superior to others on so many more levels. The Veyron could do these races and still drive home afterward, no fuss what so ever, these highly modified GTRs are unreliable and probably very temperamental.

Heaven knows just how quick these guy could make a Veyron go if they didn't desire quality, refinement and durability.
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      02-07-2011, 06:46 PM   #44
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Veyron I don't think was in it's top speed mode. Note that the rear spoiler is fully raised. In full power mode the spoiler does not deploy.
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