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Alfa Romeo 33 Stradale Successfully Completes Dynamic Testing At Nardò Circuit
The Alfa Romeo engineering team recently completed rigorous testing of the new 33 Stradale prototype at the Nardò circuit. The focus was on evaluating its driving dynamics and performance under extreme high-speed conditions. Key parameters such as aerodynamics, top speed, cooling systems, and cabin soundproofing were scrutinised. This testing precedes the first delivery in Italy, expected by late December.
Alfa Romeo selected the Nardò Technical Center in Salento, Italy, for these high-speed tests. Established in 1975 by FIAT, this advanced facility spans 1,730 acres and features 20 test tracks for various development activities. Among these is the renowned Nardò Ring, a circular track known for its high-speed testing capabilities.
The Nardò Ring is notable for its 2.5-mile diameter and 7.8-mile length, making it the fastest circular car track globally. It offers varying inclines across four lanes, allowing drivers to balance centrifugal force at compensating speeds. This unique design gives the sensation of driving on an endless straight road.
During testing on this track, Alfa Romeo validated the 33 Stradale's target top speed of 207 mph and acceleration from 0 to 62 mph in under three seconds. These achievements are attributed to meticulous aerodynamic design and a powerful 3.0-liter twin-turbo V-6 engine producing over 620 horsepower.
The engine is paired with an 8-speed DCT gearbox that powers the rear wheels with help from an electronic limited-slip differential. This engine is an evolution of Alfa Romeo's existing V-6 engines used in their highest performance cars. It is mounted longitudinally in the center for optimal performance.
Prior to Nardò, dynamic testing occurred at Balocco Proving Ground in Vercelli province on Alfa Romeo's iconic track. Since 1962, this location has been pivotal for developing racing cars competing internationally. Here, engineers focused on balance, braking systems, and road handling through medium- and high-speed tests.
Advanced Driving Modes
The car features two drive modes: Strada (Road) and Pista (Track). Strada mode ensures comfort with smooth power delivery and soft suspension. In contrast, Pista mode offers peak power with responsive pedals and rigid suspension for an adrenaline-fueled experience.
A standout feature is Partenza Veloce (Quick Start), activated by pressing the Quadrifoglio button on the central tunnel. This optimises gearbox, traction control, and power delivery to prevent wheel slippage during rapid starts.
Braking System Precision
At Balocco, testers highlighted the precision of the brakes across different drive modes. The Alfa Romeo Brake-By-Wire system ensures excellent control by managing both braking pressure and pedal feel. Brembo's carbon-ceramic brakes provide consistent high-performance stops with minimal fading at high temperatures.
The braking system includes ventilated and perforated discs with six-piston aluminum monobloc calipers at the front and four-piston systems at the rear. This setup allows the car to brake from 62 mph to a complete stop in under 108 feet.
During specific sections of testing, traction control was disengaged to push the car close to its top speed safely. The active suspension system played a crucial role by combining comfort with performance through dual-arm suspension schemes featuring active shock absorbers.
This setup provides optimal steering control with semi-virtual steering on both axles, ensuring precise handling even at high speeds or during lateral acceleration challenges.
The sound of the twin-turbo V-6 engine adds to the driving experience by creating a 'mechanical symphony' that envelops passengers while accelerating rapidly.
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