Porsche hybrid race car is faster than Formula One
The engineers also unchained the aerodynamics of the 919 Evo from the regulations. The new larger front diffuser now balances the new and very large rear wing, both of which have actively controlled drag reduction systems. The hydraulically operated systems trim the trailing edge of the front diffuser and opens up the slot between the rear wing main plane and the flap respectively in order increase the aerodynamic efficiency of the Evo. Underneath the Evo the turning vanes and floor have been optimised with fixed height side skirts to increase the aerodynamic performance again as efficiently as possible. In total the aero modifications resulted in 53 per cent higher downforce and an increase in efficiency by 66 per cent (compared to the 2017 Spa WEC qualifying).
To help further expand the performance envelope, the super-fast Evo gained a four-wheel brake-by-wire system to provide additional yaw control. Furthermore, the power steering was adapted for the higher loads and stronger suspension wishbones (front and rear) were implemented.
Compared to the car in race trim, the dry weight was reduced by 39 kilograms to 849 kilograms. To achieve this, everything was removed what isn’t needed for a single fast lap: air-conditioning, windscreen wiper, several sensors, electronic devices from race control, lights systems and the pneumatic jack system.
Porsche’s multi-year tyre partner Michelin was immediately interested to work with a car that produces more downforce than a Formula One car. Keeping the tyre dimensions (31/71-18), the target was to increase the grip level significantly. Michelin developed new compounds to deliver the necessary grip with no compromise on safety.
The ‘919 Tribute Tour’ continues
The record lap at Spa was the first appearance on the 919 Tribute Tour. It can next be seen doing a demo lap on the legendary Nordschleife before the start of the 24-Hours Nürburgring race on May 12. Drives at the Goodwood Festival of Speed (July 12 to 15) and the Festival of Porsche in Brands Hatch (September 2) will follow as well as the car’s participation at the Porsche Rennsport Reunion in Laguna Seca, California (September 26 to 29).
