Pininfarina New Stratos
From Pininfarina press: The one-off sports car drawn on heritage of the Lancia Stratos was engineered and built by Pininfarina for German business man Michael Stoschek
The very first inspiration source of Michael Stoschek’s Special Project is the legendary Lancia Stratos HF that was without any doubt the most spectacular and successful rally car of the 70’s. The project result, the contemporary New Stratos, is an innovative supercar made for Michael Stoschek and his son Maximilian. Michael Stoschek is chairman of the Brose Group shareholder's meeting. He is also a collector and driver of historic racing cars as well as a successful entrepreneur in the automotive supply. The decision to develop and build a new, ready-to-run Stratos was inspired by a meeting with Chris Hrabalek, with whom Michael Stoschek became acquainted at the 1986 World Stratos meeting organized in Alta Badia by Stoschek. This was also the impetus behind Stoschek’s involvement in the 2005 Fenomenon Stratos project, as well as his acquisition of the Stratos trademark rights.
In September 2008, Michael and his son commissioned Pininfarina to the fulfilment of a long-held dream and to the build of a one-off vehicle the technical concept and design of which were largely determined by the two car enthusiasts.
The assignment was to find a contemporary interpretation for all the quintessential design characteristics of the Lancia Stratos, including: the wedge-shaped body, the semi-circular windshield, the front end with its central radiator, the rear end with its round tail lights, roof and rear spoiler and the five-star rims. Since the project began in late 2008, all of Michael and Maximilian Stoschek’s, as well as Chris Hrabalek’s, conceptual and formal specifications for the body and interior have been implemented by Pininfarina in order to make the car feasible.
“It was Mr. Stoschek’s dream to recreate a car like that, and it was our job to interpret it” said Luca Borgogno, part of the Pininfarina’s team designers, who followed the styling implementation and style feasibility of the New Stratos Project. “In the end, the role of a design house like Pininfarina is to contribute creativity and expertise that goes beyond the client’s expectations. We handled the whole process right up to the construction of the finished car. Following this process, the client lived an absolutely unique experience. He got the chance to witness the birth of his own car, a very personal environment that we make to measure for him”.
Once the styling implementation had been approved, the New Stratos went through all the steps necessary to become a real, fully functioning car ready to be driven on the road. This was a complex and comprehensive process that goes beyond the mere construction of a prototype and included the whole engineering of the car with mathematical modeling, the design and testing of each component, wind tunnel testing.
The goal for the development of the Lancia Stratos HF’s successor was to once again create a mid-engine sports car with a short wheelbase, low weight and superior agility. Just as the Lancia Stratos, with its Ferrari Dino V6 engine, was nevertheless a distinct sports car in its own right, the New Stratos is also a distinct development, using components of the Ferrari 430 Scuderia. Almost all of these components have been modified and, as necessary, customized to their new purpose. However, it should also be pointed out that the Ferrari Scuderia really sets the standard amongst the current super sports cars and, as such, provides an excellent base for the New Stratos.
The chassis, composed from aluminum extrusions, was shortened by 20cm and welded to a roll cage made of FIA-certified, 40mm-thick steel. This method significantly increases rigidity, and this, combined with the shifting of the center of gravity towards the front, provides the basis for the vehicle’s extraordinary handling characteristics. Both the body – which is 33cm shorter than the Scuderia’s – and the interior are constructed entirely of carbon fiber and aluminum. The 4.3L V8 engine, which draws its intake air from the roof spoiler’s side openings, has been equipped with a new control unit and a high-performance exhaust system, including manifold and sports cat.
The 6-speed transmission received a new mechanical differential lock, and the modified control electronics allow for even faster gear changes at less than 60 milliseconds.
The chassis was completely reengineered, including integration of new electronic damper calibration, adjustable via the steering wheel, modified springs and optimized camber and toe values. The 9- and 11-inch wide by 19-inch center lock wheels are fitted with Dunlop Sport Maxx tires, sizes 265/30/19 and 315/30/19. The Brembo brake systems, comprised of 398mm-diameter ceramic discs and 6-piston calipers at the front axle, and 350mm-diameter and 4-piston calipers at the rear axle, are equipped with Brembo racing brake pads and steel flex lines. Finally, the steering has been converted to electro-hydraulic, the new smaller steering wheel displays the shift points via multi-colored LEDs and the paddle shifters are from the Ferrari 430 racecar. The battery is a lithium unit in a carbon casing, with a weight of 4.2kg and a capacity of 84 Ah. Despite the approximately 55kg steel roll cage and the 28kg air conditioning unit – which it was necessary to take on due to the large glass surfaces – the New Stratos weighs about 80kg less than the base vehicle.
The base chassis of Ferrari 430 Scuderia has been modified, shortening the wheelbase by 200 mm at the rear firewall section and rebuilding the upper structure, now made of a steel roll cage instead of the original aluminium extrusions. The combination of above modifications together with the carbon fibre inner structure of the roof, bonded to the roll cage, have led to a significant improvement of the torsion and bending stiffness of the body, as well as to the roof crush resistance. All the above customizations have been supported by CAE simulations during the engineering phase and certified by experimental verifications performed on our test rigs.