McLaren MP4/5
The McLaren MP4 / 5 Ayrton Senna's
Template: Infobox racing car / Maintenance / stop parameters
The McLaren MP4 / 5 is a Formula 1 racing car of the team McLaren, which was used in the 1989 season. Ayrton Senna and Alain Prost won with the model developed by Neil Oatley car ten Grand Prix and achieved 15 pole positions.
In the 1990 season Senna and Gerhard Berger achieved with the McLaren MP4/5B mentioned, modified version of the vehicle further six victories and twelve pole positions. In both years, McLaren won both the Drivers 'and the Constructors' World Championship.
Technology
The monocoque consisting of a carbon fiber composite mixture of fibers in the honeycomb structure and is made from Hercules Aerospace in the United States. The front and rear wheel suspensions were made double superposed wishbones. The fortifications of the front wishbone was on top outside, bottom inside of the monocoque, the lower wishbones on the rear axle were mounted on the gearbox. The shock came from the Showa Corporation, and could be adjusted from the cockpit in hardness. The carbon fiber brake discs were manufactured by Carbon Industries, the four-piston calipers came from Brembo.
Was driven to the MP4 / 5 of a V10 Honda engine with 72 ° cylinder angle and the type designation RA109E (1989 ) or RA110E (1990 ), which had a weight of 153 kg. The longitudinally mounted mid-engine sucker had 3493 cc displacement, the bore was 52.5 mm and stroke of 92.0 mm. The RA109E made at 12,800 rpm 1660-680 hp, the RA110E turned 13,300 min-1 and made about 20 hp more. The transmission took a six-speed manual transmission of McLaren, who came from carbon fiber existing multi-plate dry-sump clutch from AP Racing. During the 1990 season, McLaren tested several times a semi-automatic gearbox with hydro-pneumatic gear shift system, which was never used because of stability problems in the race.
The revisions in the MP4/5B was mainly on aerodynamics: The front end was higher and narrower, and the side boxes were increased to allow better outflow of cool air. Due to the large body length of Gerhard Berger also had the roll bar, both at the air box, as well as front of the cockpit, increased. Used from the Spanish Grand Prix, McLaren an enlarged diffuser with extended air shafts.