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Formula 1 News - February 2005
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1 February: Renault F1 R25 Chassis and RS25 V10 Engine Technical Specifications

The technical specifications of the new Renault F1 R25, 2005 race car.

Renault F1 R25 - Technical Briefing with Bob Bell

Chassis
Moulded carbon fibre and aluminium honeycomb composite monocoque, manufactured by the Renault F1 Team and designed for maximum strength and stiffness with minimum weight. Engine installed as a fully-stressed member.

Front suspension
Carbon fibre top and bottom wishbones operate an inboard titanium rocker via a pushrod system. This is connected to a torsion bar and damper units which are mounted at the front of the monocoque.

Rear suspension
Carbon fibre top and bottom wishbones operating vertically-mounted torsion bars and horizontally-mounted damper units mounted on the top of the gearbox casing. Bottom wishbone attached by ‘v’ keel mounting.

Transmission
Six-speed semi-automatic gearbox with one reverse gear.

Fuel system
Kevlar-reinforced rubber fuel cell provides reduced risk of fire and is mounted behind cockpit in chassis monocoque.

Cooling system
Separate oil and water radiators located in the car's sidepods and cooled using airflow from the car's forward motion.

Electrical
Integrated chassis/engine electronics and software co-developed by Renault F1 Team and Magneti Marelli.

Braking system
Carbon discs and pads (Hitco); calipers by AP Racing.

Cockpit
Removable driver’s seat made of anatomically formed carbon composite, with six-point harness seat belt. Steering wheel integrates gear change and clutch paddles.

Car dimensions and weight
Front track 1,450mm Rear track 1,400mm Wheel base 3,100mm Overall length 4,800mm Overall height 950mm Overall width 1,800mm Overall weight 605kg including driver, camera and ballast


The technical specifications of the Renault F1 RS25 V10 engine for the 2005 World Championship - RS25 V10: Technical Briefing with Rob White

The RS25 has been designed specifically to meet the new two race weekend reliability regulations imposed by the FIA.

  • 72° 'V' angle with optimum integration in the new R25 chassis. 
  • Atmospheric 3-litre V10 engine. 
  • Mass optimised for the required reliability, with a gain relative to the RS24. 
  • Reliability of more than 1400km with a performance gain relative to the RS24. 
  • 98 % of parts are new.

related:
Mild Seven Renault F1 Team launches R25 in Monte-Carlo
(01/02/2005)
Renault F1 R25: Technical Briefing with Bob Bell (01/02/2005)
RS25 V10: Technical Briefing with Rob White (01/02/2005)

Latest Formula News from Renault:

Renault F1 Team unveils the R27 in Amsterdam (24/01/2007)
Renault R27 Technical Specifications (24/01/2007)
Bob Bell, Technical Director Q&A (24/01/2007)
Rob White, Deputy Managing Director (Engine) Q&A (24/01/2007)
Pat Symonds, Executive Director of Engineering Q&A (24/01/2007)
Denis Chevrier, Head of Engine Track Operations Q&A (24/01/2007)
Giancarlo Fisichella Q&A (24/01/2007)
Heikki Kovalainen Q&A (24/01/2007)
The World Champion says 'Gracias' (25/10/2006)
Interview with Flavio Briatore (06/09/2006)

The 2005 Mild Seven Renault F1 Team Page
The 2005 Fernando Alonso Profile Page

The 2005 Giancarlo Fisichella Profile Page

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