The KTM X-Bow’s long-stroking, four-valve engine delivers a powerful performance: 221 lb-ft of torque peaks at a level between 2200 and 4000 rpm. The peak performance of 220 bhp is achieved at 5900 rpm. Even more powerful engine variations in the 300-horsepower range are planned at a later date.
The drive unit package is complemented by a manual 6-gear transmission, which is also made by VW and can be equipped with a limited-slip differential if so desired. An optional S tronic transmission will also be offered. The drive comes from the rear wheels.
The First KTM Sports Car in Company's 50-year History
An aggressive design and sporty potential: the X-Bow is not merely a milestone in the KTM brand’s more than 50-year history, it’s also a new citation in the small, but elite segment of radical, lightweight sports cars. This exceptional position is the result of the concept: for their first car, KTM employs the finest materials, high-tech and the know-how of respected development partners such as Audi and Dallara. The result is a street-homologated sports car with racing technology, like an avantgarde, carbon-fiber monocoque. Thanks to the basic version’s light weight and the 220 bhp Audi TFSI engine, the performance values of the KTM X-Bow outstrip those of super-sport cars with more than twice the power: with a deadweight of approx. 1543 lbs, the KTM X-Bow accelerates to 62 mph in just 3.9 seconds.
But the X-Bow isn’t just a racing machine, even if it is going to accomplish spectacular performance feats on racing circuits. With its modern technologies and exceptional solutions, it’s much more oriented towards sporty drivers who seek a purist’s driving experience. By foregoing electronic assistants and today’s standard comfort features, the X-Bow offers an unfiltered adventure – aided by its standalone wheels in the style of monoposto racing cars, transparent technology and the car’s reduced concept, i.e. no roof, doors or windscreen. The sports car has only a 70-millimeter, transparent wind deflector. With all these unique features, driving the KTM X-Bow becomes an experience with an immediacy that otherwise can only be felt when riding a motorcycle.
Carbon-fiber Monocoque: Racing Know-how from Dallara
Carbon-fiber monocoques have been the Formula 1’s safety net for years. On the road, this technology was formerly reserved for the elitist, super sports cars in the highest price classes. KTM would now like to be the first to offer this solution in a much more affordable environment.
KTM has thereby been able to call upon the expertise of its development partner, Dallara. These specialists from Varano (near Parma) in Northern Italy have long been acclaimed as carbon technology experts, from the conception to the production of components made of this light, yet rigid material. The monocoque developed for the KTM X-Bow is not only extremely robust it is also safe, thanks to an integrated crashbox. And yet it weighs only about 70 kilos and is therefore a crucial factor in the vehicle’s spectacular performance.
The Engine: TFSI Technology from Audi
KTM was able to gain Audi AG as its partner in developing the drive unit. The four-cylinder TFSI engine represents the X-Bow’s construction principles in an ingenious way: by featuring lightweight, high-performance and intelligent technologies.
The engine’s outstanding attribute is its gasoline direct injection technology, FSI. In this case, it’s combined with an exhaust turbocharger plus an intercooler. Thanks to FSI, the engine can utilize fuel better than one with ordinary intake manifold injection and it even gets by on less fuel in the frequently used partial load range.
The KTM X-Bow’s long-stroking, four-valve engine delivers a powerful performance: 221 lb-ft of torque peaks at a level between 2200 and 4000 rpm. The peak performance of 220 bhp is achieved at 5900 rpm. Even more powerful engine variations in the 300-horsepower range are planned at a later date.
The drive unit package is complemented by a manual 6-gear transmission, which is also made by VW and can be equipped with a limited-slip differential if so desired. An optional S tronic transmission will also be offered. The drive comes from the rear wheels.
The Aerodynamics: Exceptional Contact Pressure
The primary development goal for the KTM X-Bow was not attaining extreme final velocities, but in optimizing the driving dynamics. The sports car is thereby aided by an ingenious aerodynamics arrangement, the result of many hours in Dallara’s wind tunnel. The most vital element in this area is the underbody, which is equipped with a prominent diffuser at the rear. To make this diffuser work even more effectively, the linking points for the rear suspension were set as high as possible. This enables the KTM X-Bow to achieve a phenomenal downforce of about 200 kilograms at a speed of 126 mph – about three times more than most other super sports cars.
In combination with the high-performance chassis, this fantastic downforce makes extreme curve speeds possible. The transversal acceleration of 1.23 g that can thus be attained noticeably surpasses the usual values achieved by street homologated sports cars.
A decision will be made concerning the small-series production of the KTM X-Bow by the end of April 2007.
KTM X-Bow Concept
Bugatti Veyron 16.4
The Bugatti Veyron 16.4 is currently the most powerful, most expensive, and fastest street-legal production car in the world, with a proven top speed of over 400 km/h (407.5 km/h or 253.2 mph). It reached full production in September 2005. The car is built by Volkswagen AG subsidiary Bugatti Automobiles SAS in its Molsheim (Alsace, France) factory and is sold under the legendary French Bugatti marque. It is named after French racing driver Pierre Veyron, who won the 24 hours of Le Mans in 1939 while racing for the original Bugatti firm.
Specifications
The Veyron features a W16 engine—16 cylinders in 4 banks of 4 cylinders, or the equivalent of two narrow-angle V8 engines mated in a "V" configuration. Each cylinder has 4 valves, for a total of 64, but the narrow V8 configuration allows two camshafts to drive two banks of cylinders so only 4 camshafts are needed. The engine is fed by four turbochargers, and it displaces 8.0 L (7,993 cc/488 in³) with a square 86 by 86 mm bore and stroke.
Putting this power to the ground is a dual-clutch DSG computer-controlled manual transmission with 7 gear ratios via shifter paddles behind the steering wheel boasting an 8 ms shift time. The Veyron can be driven by full automatic transmission. The Veyron also features full-time all-wheel drive developed by UK based Ricardo helping to transfer power to the road. It uses special Michelin run-flat tires designed specifically for the Veyron to accommodate the vehicle's top speed.
The car's wheelbase is 2710 mm (106.3 in). Overall length is 4462 mm (175.8 in). It measures 1998 mm (78.7 in) wide and 1206 mm (47.5 in) tall.
Curb weight is estimated at 4,160 lb (1890 kg). This gives the car a power to weight ratio of 529 bhp/tonne.
The Bugatti Veyron has a total of 10 radiators.
* 3 radiators for the engine cooling system.
* 1 heat exchanger for the air to liquid intercoolers.
* 2 for the air conditioning system.
* 1 transmission oil radiator.
* 1 differential oil radiator.
* 1 engine oil radiator.
* 1 hydraulic oil radiator for the spoiler.
Performance
Top speed was initially promised to be 252 mph (406 km/h), but test versions were unstable at that speed, forcing a redesign of the aerodynamics. In May 2005, a prototype Veyron tested at a Volkswagen track near Wolfsburg, Germany, and recorded an electronically limited top speed of 400 km/h (249 mph).
The Veyron is the quickest production car to reach 100 km/h (62 mph) with an estimated time of 2.5 seconds. It also reaches 200 and 300 km/h (124 and 186 mph) in 7.3 and 16.7 seconds respectively. This makes the Veyron the quickest-accelerating production car in history. It also consumes more fuel than any other production car, using 40.4 L/100 km (5.82 mpg) in city driving and 24.1 L/100 km (10 mpg) in combined cycle. At full-throttle, it uses more than 125 L/100 km (2.1 mpg), which would empty its 100 L fuel tank in just 12.5 minutes. The car's everyday top speed is listed at 234 mph (377 km/h). 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. This is the "handling" mode, in which the wing helps provide 770 pounds (3425 newtons) of downforce, holding the car to the road. The driver must, using the key, toggle the lock to the left of his seat in order to use the maximum speed of 253.2 miles per hour (407.5 km/h). Theoretically it can go faster but it is electronically limited to 253.2 miles per hour (407.5 km/h) to prevent tire damage. The key functions only when the vehicle is at a stop when a checklist then establishes whether the car—and its driver—are ready to enable 'top speed' mode. If all systems are go, the rear spoiler retracts, the front air diffusers close and the ground clearance, normally 4.9 inches (12.4 cm), drops to 2.6 inches (6.6 cm).