A lightweight sports car

 

With the Sergio you enter the fascinating and exciting realm of the two-seater barchetta as a unique and extreme object. Sportsmanship in the truest sense of the joy of driving, the passion of those who view cars as an unequalled source of excitement, the pleasure of admiring the essentiality of a one-off car by Pininfarina. Overall, the Sergio offers real sports performance, with a shell of torsion stiffness which exceeds that of the original spider, thanks to the reduction in the size of the doors, and the reduction of the total mass of about 150 kg compared to the spider. This allows good handling and a further improvement of acceleration, estimated at below 3.4 seconds for 0-100 kph, at the top of its class.

Photogallery

Aerodynamics and speedy

Changes in the body with which the Pininfarina Style Centre has transformed the original car. A Ferrari 458 Spider, into a barchetta were supported by calculations and tests in the Grugliasco wind tunnel to optimise aerodynamic performance. In particular, a totally new body was produced, full carbon, saving about 10% in weight compared to the original body in aluminium, all to the benefit of acceleration and pick-up. Compared to the original car, 21” light alloy one-stud wheels were included, with a specific design, and a hub version derived from the 458 Challenge; new Led taillights, new specific headlamps inserted into the bumper; specific small doors, window-less and opening upward by 45 degrees; new dash top; modified seats, with new fixed head restraints, disconnected from the seat. The roof, windscreen and rear bench seat were removed.

TECHNICAL SPECIFICATIONS

 

Maximum length: 4550 mm

Maximum width: 1940 mm

Maximum height: 1140 mm

Boot capacity: 110 litres

Power train (original Ferrari 458 Spider): 4499cc V8; Sequential gearbox 7M + RM

Package: 2 doors, 2 seats

Chassis: original 458 Spider

Cx XS: about 5% lower than the original car

Weight: about 1280 kg

Maximum speed: approx 320 km/h

Acceleration from 0 to 100: less than 3.4 seconds

A aerodynamic downforce studied in details

The aerodynamics have made it possible to achieve interesting results, starting with the creation of a virtual windscreen. The elimination of the windscreen would, in fact, involve a flow of air at increasing pressure as the car’s speed increases on the heads of the driver and passenger. The engineers and designers at Pininfarina have therefore designed, built and tested an airfoil placed in a recess on the front bonnet, which produces a double deflection of the air flow entering the passenger compartment.










The first deviation is from the wing itself, the second from the air that accelerates in the channel created between the airfoil and the corresponding shape of the recess in the trunk. The result is that, thanks to the virtual windscreen, the air passes above the heads of the driver and the passenger, greatly increasing comfort. This aerodynamic effect also contributes to increase the down force on the car's front axle. The virtual windscreen is effective at speeds as low as 50 kph. The loss of aerodynamic load on the front axle, due to the elimination of the windscreen, has been recovered from a wing inserted in the front bumper.










The shape and dimensions of the wing are calculated so as to give the required load at the various speeds and, at the same time, allow correct flow of air to the radiators of the cooling system, set centrally at the front. To improve the protection of the occupants a roll-bar with a fixed spoiler increases the down force on the rear axle. The attention to detail goes so far as the central rear-view mirror, whose form has been aerodynamically optimised to link up with the air flow of the virtual windscreen. The engine's air intake is channelled from the air inlets in the two sides. The air vents at the base of the roll-bar convey the cooling air to the oil coolers.

ITALY

 

Pininfarina Style and Engineering Centre
Cambiano (Turin)

TIMELINE

Engineering

  • 2008

    HYPERION

    Pininfarina returns to custom-built vehicle for special customers

  • 2010

    NIDO EV

    an electric car conceived, designed and built entirely at the Pininfarina Design and Engineering Centre in Cambiano, Turin.

  • 2011

    HYBUS

    Hybus is the first recycled, hybrid, sustainable bus

  • 2012

    CAMBIANO ENGINEERING

    Consolidated technological expertise and innovation

  • 2012

    WIND TUNNEL-ORIGONE

    The world champion Simone Origone in the Wind Tunnel

  • 2012

    WIND TUNNEL-XAM

    The futuristic vehicle-workshop to test technologies and materials

  • 2013

    SERGIO
    ENGINEERING

    The exclusive two-seater barchetta

AT THE SAME TIME...