don’t try this at home
Tuesday, December 27th, 2005The new Passat’s crash test results are in…
finding the signal in an industry filled with noise
The new Passat’s crash test results are in…
...an engine that never sounds hurried or manic, with a rich, melodious growl underlying each different squeeze of throttle. Floor it in, say, third and as it swells and pulls from a few hundred low, rumbling rpm to a top-end howl it goes through a whole host of sonic stages, the most curious of which sounds something like a helicopter taking off.
source: AutoExpress
There are few things in this world that sound as glorious as VW’s VR6, especially when the application allows the engineers to open up the intake and exhaust a bit. (Imagine the hum of a inline-6 with more texture, more of the warble you associate with an inline-5).
The VR has only gotten more melodious with its extra cams and displacement, not to mention the cylinder filling made possible by variable valve timing. In fact with open piped dual exhaust the last R32 sounded so good we found ourselves driving with the window down at temeratures below-freezing.
The next R sounds even edgier – click here for an earful.
(The US market car’s extra displacement should only intensify the experience).
When we first learned Bugatti was laboring to produce a 1000hp supercar, we dismissed it as a pointless excercise, a proud boast that was fueled by even more pride, much like the VW Phaeton.
But now that it has been completed it’s not the 1000hp, the sustainable 253mph top speed, or the sub 3-second to 60 time that impresses us most. It’s the aerodynamics, suspension, steering and braking systems that make all this power relatively usable that has us thinking the $1,250,000 asking price is almost reasonable… (Besides – they’re not planning to making any money on the car – this one is simply to build the brand; profitable cars are in the pipeline).
Here are some excerpts from Csasba Csere (say ‘Chubba Chedda’)’s dispatch in the November issue of C&D:
One reason it felt so secure is that when you hit 137 mph, the Bugatti hunkers down, lowering its normal ride height of 4.9 inches to 3.1 in front and 3.7 in the rear. At the same time a small spoiler deploys from the rear bodywork and a wing extends about a foot, perched at a six-degree angle. Two underbody flaps ahead of the front tires also open up. This configuration produces substantial downforce—about 330 pounds in front and 440 in the rear at 230 mph… But 230 mph is about as fast as the Veyron will go until you put the car into top-speed mode. This involves coming to a stop and, while the car is idling, turning a key in a lock on the floor to the left of the driver’s seat. When you do that, the car sinks down even lower on its suspension, until ground clearance has been reduced to a mere 2.6 inches in front and 2.8 in the rear. This setup also causes the front underbody flaps to close and the rear spoiler and wing to retract, although the wing remains tilted out of the body at a slight two-degree angle. These changes reduce the car’s drag coefficient from 0.41 to 0.36, and they reduce the peak downforce from 770 to 120 pounds. Once the Veyron exceeds 35 mph, if you turn the steering wheel more than 90 degrees, or so much as touch the brakes, the car’s configuration reverts to the handling mode…
Developing tires [special Michelin PAX System Pilot Sports] that could withstand 250-plus mph while supporting up to 4800 pounds of car, occupants, and downforce was one of the major technical challenges of the Veyron
Fortunately, the Veyron’s steering is ideally set up for such fast running. There’s absolutely no slack on-center, and the steering responds with a gentleness that makes it easy to feed in the delicate corrections needed to keep the Veyron between the center lane’s dotted lines without overcorrecting…
...You could not only hold a cell-phone conversation at 185 but also dial a cell phone at that pace. Allocate some money to keep an attorney on retainer if you get one of these cars, because double and triple the speed limit will quickly feel comfortable and normal.
You will likely only experience this speed in short bursts, which is why the Veyron’s powerful brakes will come in handy. The car is equipped with huge carbon-ceramic brakes: 15.7 inches in front with eight-piston, four-pad calipers, and 15.0 inches in back with six-piston, two-pad calipers. When you step on the brakes at high speed, the rear wing tilts up to a 55-degree angle. At 230 mph, this increases rear downforce to 1100 pounds and adds as much as 2500 pounds of drag. A panic stop at that speed produces nearly 2.00 g of initial deceleration—at least 50 percent more retardation than a Porsche 911 can generate at any speed.
Not since the McLaren F1 (still our standard) has a car so impressed us with its engineering (and we’re including the Ferrari Enzo, the Porsche Carerra GT, and the Mercedes SLR here).
(Click here for AutoWeek’s coverage…)
UPDATE
These excerpts from 4Car are worth reading:
It is so easy to be critical of the Veyron. It’s size, its expense, its excess in all areas. But what cannot be denied, at least not by anyone who’s actually had the privilege of driving one, is the towering engineering achievement that it represents.
The claimed 987bhp was measured, as are all VW power outputs, at an ambient outside temperature of over 40° C, where the air is thin, starving the turbos of the oxygen they need to develop full boost. At a more normal temperature, say 20° C, its output is nearer 1035bhp.
When you accelerate, it is torque, not power that you feel. The Veyron has 922lb ft of the stuff: to put that into perspective, the only other car ever made to even approach the Veyron’s performance, the McLaren F1, had 479lb ft of torque. [but] with oil and fuel on board it weighs 1950kg. A McLaren F1, by very stark contrast, weighs less than 1200kg.
The Veyron, for all its speed, massive grip and crushing braking power, is as far from being a track car as a Formula One car is from being a road car.
The real scale of the Veyron’s achievement is not so much that it does things beyond the scope of any other road car, but that it does them without really trying.
UPDATE
Gordon Murray, designer of the McLaren F1, has this to say in the Jan. ‘06 issue of Road & Track:
In summing up the Bugatti Veyron, had I not driven it, I would have great difficulty in deciding just what it stands for and where it fits in. To be absolutely fair, the Veyron team did not set out to challenge the McLaren F1, enzo or Porsche GT as the ultimate driving machine. This it certainly doesn’t do at two tons with turbo lag. It also falls short of the Ferrari 612 Scaglietti and the Mercedes SLR McLaren for high performance touring because of the outward vision problems and lack of lggage space. Where it absolutely succeeds is as a massive technical achievment – a statement for VW AG.
UPDATE
Murray also published a more expansive piece in this month’s Top Gear. Here’s an excerpt:
It’s not trying to be the ultimate driver’s car. Only the ultimate machine.
marketing claim:
the Michelin Energy™ MXV4® S8 tire offers an array of improvements over its predecessors including a quieter, smoother ride, improved snow performance, lower rolling resistance and improved handling on dry surfaces.
owner experience:
Was very happy with the tires these replaced (OEM MXV4 Plus) with 52k. NOT HAPPY with the MXV4 S8. Dont believe Michelins hype – they are not better in every way. Handling diminished, ride now jittery (not balance – just harsher), braking distances longer. They are quieter, and I expect they will last, but if youre happy with the MXV4 Plus, stick with them!
our take:
The Michelin Energy MXV4 has long been one of our favorite tires of all time – grippy, quiet, confidence inspiring, surprisingly capable in the winter. The next generation – the Plus version – had better impact absorbtion and uncanny tracking but was slippery when cornering in the wet or snow and loud on some surfaces. Still a number of cars that drive well do so largely because they come from the factory on the MXV4 Plus – take them off and your refinement and fuel ecomomy are often lost. Unfortunately the S8 version is as vague as its predecessor was precise. It exchanges grip 99% of the time for better winter traction and lower noise levels on those rare occasions. Whereas the Plus made the car it was placed on, the S8 detracts from it – witness the feel of the old Accord or Jetta vs. the new ones: in both cases the S8 lends a slippery, vague feel regardless of any improvements made elsewhere in the chassis.
Click here for a clone of the GLI we won’t be getting in the U.S. market…
(Is it just us or does it look like a more natural progression from the last Jetta and Passat?)
We prefer naturally aspirated, high compression engines but the truly power hungry need more.
Debates rage daily among those who prefer turbos to superchargers and vice versa. The turbo camp is willing to put up with softer throttle response for the kick of a turbo coming on line and downright silly power levels you can achieve, while the supercharger crowd prefers the more linear torque delivery and sharper throttle response.
Ideally you’d have a supercharger to boost response at lower speeds and a turbo to take over as revs rise… That’s what VW’s done for the engine in the new Golf 1.4 FSI . Their goal: to shrink the engine from the class standard 1.6-2.2L size down to 1.4 liters. You get the power you’d expect from the larger engine with better emissions and running smoothness (fours are smoothest at smaller displacements) – and none of the nasty lag and surge of the 1.8T or (to a lesser extent) the new 2.0T FSI motors…
UPDATE Here’s more info from VW’s UK website…