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Like most performance car manufacturers these days, losing those extra kilos in their flagship coupe showcases their abilities to build a more serious out and out coupe than the base model, which has to cater to a wider audience and is still built to a certain budgeted cost. Manufacturers like Porsche have long known this and you can see in their 911 series of cars. You have the basic Carerra which becomes the Carerra S, which then morphs into the GT3, which then becomes the GT3 RS. Each model slightly more performance oriented than the one before up to a point where it goes pretty extreme and lots of weight loss is the key to increased performance.
So now Audi has created a lightweight version of their flagship coupe the R8 and are calling it the R8 GT. This car weighs 1525kgs compared to the R8 V8 4.2 which weighs in at 1625kgs. As if hearing about a 100kg weight loss in an a car already made from the already light aluminium alloy isn't enough Audi has mentioned that this car comes with the V10 engine used in the, very obviously named R8 V10. So we have extra power coupled to the weight loss.
Now for the weight loss details, which I find interesting. The R8 GT has a windshield made of thinner glass. The glass used between the cabin and the engine compartment as well as the rear hatch is replaced with polycarbonate plexiglass. All of the above took 9kgs off the car. The rear wing is now CFRP, removing 1.2kg. Thinner sheet aluminium and additional cutouts were made to the aluminium hatch for the luggage compartment up front saved 2.6kg.
The rear hatch for the engine is now replaced with carbon fiber reinforced plastic (CFRP) and removes a further 6.6kg at the rear. The rear bumper and sideblades (those R8 design features so clearly noticeable) is also CFRP and saves 5.2kg and 1.5kg respectively.
Being German, hence very efficient and close to the verge of suffering from Obsessive Compulsive Disorder they also attacked the mechanical components of the R8. They shaved 1kg from the brake system, 4kg from the brake disc caps, 9.4kg from the battery, 2.3kg from the air intake system and 2.8kg from the engine bay insulation. The exhaust system also uses a lighter design and construction method.
They also tackled the interior and the carpet utilised in the R8 GT weighs a good 7.9kg lighter than previously. How do they make carpets so much lighter in such a small car? Was the base R8 using a really thick pile of carpets? They also threw out the normal electrically adjustable sports seats and used seats that were more race car like and lost a really substantial 31.5kgs.
The R8 GT comes with the 5.2liter V10 engine and Audi have messed about with it and it now produces 560bhp, up from 525bhp. Torque is bumped up by 10Nm to 540Nm and all of this makes 0-100km/h in 3.6seconds, 0-200km/h in 10.8seconds with a top speed of 320km/h (198.4mph).
The transmission used in the R8GT is the R-tronic sequential manual transmission. It is basically a manual gearbox with a solenoid effected electrohydraulic clutch and works through a flappy pedal gear shift. The gear changes at full song takes just 1/10th of a second. As usual in cars nowadays there is two modes in automatic and two modes in manual for the gear changes. Launch control is also added and all of these systems go through a transmission that basically channels 15% of the power to the front and 85% to the rear, making the R8 GT very rear biased. Of course, up to 30% of the power can be channeled to the front if required.
Other than that, Audi mounts lightweight internally ventilated, carbon fiber ceramic brake disks on the R8 GT.. Together they weigh 9kg less than their steel counterparts of the same size. They measure 380 millimeters (14.96 in) in diameter up front and 356 millimeters (14.02 in) at the rear.
The 19-inch forged wheels are 8.5 J x 19 up front and 11 J x 19 at the rear, and are shod with size 235/35 and 295/30 tires, respectively. Audi will mount 305/30 tires together with optional wheels on the rear axle upon request. Cup tires, which offer the ultimate in performance on dry roads, are available for racing enthusiasts.
Only 333 are available worldwide and Audi have not mentioned whether they will be produced in right hand drive for those of us that drive on this side of the road. I hope they do, as it is a meticulously engineered car that should be enjoyed by those of us driving on the "right" side of the road.
Writer is an expert in new car and is driving a Chevrolet.
Have You Seen The New Lamborghini Sesto Elemento?
The Sesto Elemento is the latest addition to the line of the Lamborghini roster. This super exotic was birthed at the Sant'Agata factory's Advanced Composite Research Center in cooperation with technology partners Boeing. The car is very light on it's feet, as it has an overall curb weight of just 2,202 lbs. It has permanent all-wheel drive, a V10 power unit, as well as innovative carbon-fiber technologies, that allows the Sesto to achieve pretty impressive numbers. This lightweight carbon-fiber structure made of carbon-fiber reinforced plastic (CFRP) helps push the Sesto Elemento to 100 km/h (62 mph) in a neck snapping 2.5 seconds (the same as a Bugatti Veyron Super Sport). The car maxes out at about the exhilarating 217 mph point, making it faster than any other Lamborghini ever built.
Lamborghini is the only vehicle manufacturer in the world to have mastered the complete CFRP process across a range of technologies. This goes for 3D design through simulation, validation, production and testing with a state-of-the-art industrial process while focusing on the very highest quality standards this allows .
This car is based totally on the new carbon fiber application and all major suspension components, as well as the rims, are made from carbon fiber, as Lamborghini is the only vehicle manufacturer in the world to have mastered the complete CFRP process across a range of technologies. The tailpipes are made from Pyrosic, an advanced glass-ceramic matrix composite. Carbon fiber can also be found in the interior on the floor and roof, on the doors, and on the cockpit and center console.
Being that this car is so lightweight with an overall curb weight of just 2,202 lbs, there is improved fuel consumption and CO2 emissions and above all, it improves the power-to-weight ratio, which all enthusiasts know, is the crucial factor for a sports car. Since this super sports car is built using CFRP, it allows the car to accelerate faster, have outstanding handling and better braking.
When it comes to Lamborghini, every single line has a clear function, the two vertical ribs at the front, improve the stiffness of the front of the car and guide the cooling air directly to the radiator which sits behind them and to the brakes. This guarantees the thermal integrity of the components under the toughest race track conditions.
Sharply cut headlamp units have bi-xenon lamps integrated in them, and there are four LEDs in each unit. The low front end looks incredibly dominant, and looks a little less aggressive than a Lamborghini Reventon, with the partially double-lipped front spoiler pushed way out front.
The interior, is upholstered in hi-tech fabric and is designed directly from the Forged Composite tub. This plays a functional role on one side and on the other side is the base for the optimally formed seat cushions, which are affixed directly to the carbon-fiber monocoque.
The center console has only three piezoelectric buttons, one to start the engine, one to shift into reverse gear and another one for the lights. The controls are kept very simple in a concentrated format. The information provided by the instruments are primarily on engine and road speed, as well as all parameters relating to engine condition. The steering is based on correct ergonomics and can be adjusted for height and reach. The pedals can be electronically adjusted longitudinally, to assist in a better driving position.
The question most people would like to know is if the Lamborghini Sesto Elemento will be going into production for sale. At this stage, the car is still considered a concept vehicle but if you have the right amount of money, then Lamborghini is willing to concede. For something this exotic, don't expect the regular Lamborghini sales tag, which is an arm in a leg itself, with most coming in around the 300 range. So, if you like the Lamborghini Sesto Elemento, then you better start counting those pennies.
About the Author
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Jermaine is an author, webmaster and consultant. He helps other internet marketers reach thier goals. He can be found at
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From Aerospace, Food Packaging to Armour: New Age Composite Materials Developed for a Variety of Industries; A*STAR's ...
Singapore, Oct 12, 2010 - (ACN Newswire) - A*STAR's Institute of Materials Research and Engineering (IMRE) is showcasing R&D in polymer and nanocomposites that are used to produce new transparent high-barrier film packaging, low dental shrinkage materials, anti-scratch coatings, aerospace carbon-fibre reinforced polymers and soft, high-impact resistant protective padding.
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