McLaren MP4 / 5

**McLaren MP4 / 5**
	Ayrton Senna's McLaren MP4 / 5
Constructor:	McLaren
Designer:	Neil Oatley
Predecessor:	McLaren MP4 / 4
Successor:	McLaren MP4 / 6
Technical specifications
Chassis:	Sandwich with a honeycomb core and top layers made of carbon fiber reinforced plastic
Engine:	Honda RA109E , V10 engine (1989) ; Honda RA100E , V10 engine (1990)
Wheelbase:	1989: 2895 mm ; 1990: 2940 mm
Weight:	505 kg
Tires:	Goodyear
Petrol:	Shell
statistics
Driver:	1989: ; 1st Ayrton Senna 2nd Alain Prost 1990: 27th Ayrton Senna 28th Gerhard Berger ; ; ; ;
First start:	1989 Brazilian Grand Prix
Last start:	1990 Australian Grand Prix
World Cup points:	262
Podiums:	36
Leadership laps:	-
	Status: end of season 1990

The McLaren MP4 / 5 is a Formula 1 racing car from the McLaren team that was used in the 1989 season . Ayrton Senna and Alain Prost won ten Grand Prix and 15 pole positions with the car developed by Neil Oatley .

In the 1990 season, Senna and Gerhard Berger achieved six more victories and twelve pole positions with the modified version of the vehicle called the McLaren MP4 / 5B . In both years McLaren won both the drivers 'and the constructors' championships.

technology

The monocoque was a sandwich construction with outer layers made of carbon fiber reinforced plastic and a core in a honeycomb structure and was manufactured by Hercules Aerospace in the USA. The front and rear wheel suspensions consisted of double triangular wishbones lying one above the other. The front wishbones were fastened outside the top and inside the monocoque at the bottom; the lower wishbones on the rear axle were attached to the gearbox. The shock absorbers came from the Showa Corporation and the hardness could be adjusted from the cockpit. The carbon-reinforced silicon carbide ceramic brake discs were manufactured by Carbon Industries , while the four-piston calipers came from Brembo .

The MP4 / 5 was powered by a V10 engine from Honda with a 72 ° cylinder bank angle and the type designation RA109E (1989) or RA100E (1990), which weighed 153 kg. The naturally aspirated engine installed lengthways in front of the rear axle had a displacement of 3493 cm³, the bore was 92.0 mm and the stroke 52.5 mm. The RA109E made at 12,800 min ^-1 660-680 hp, the RA100E turned 13,300 min ^-1 and provided about 20 hp. A six-speed manual transmission from McLaren took over the power transmission, the dry multi-plate clutch with carbon fiber reinforced discs came from AP Racing . During the 1990 season, McLaren tested a semi-automatic transmission with a hydropneumatic gear change system several times, but it was never used in the race due to stability problems.

The revisions to the MP4 / 5B mainly concerned the aerodynamics: the front section became higher and narrower, and the side pods were also raised to allow better outflow of the cooling air. Because of Gerhard Berger's great body length, the roll bar had to be raised, both on the airbox and in front of the cockpit. From the Spanish Grand Prix , McLaren used an enlarged diffuser with elongated air ducts.

Results

McLaren MP4 / 5 Honda 3.5 V10

driver	No.	1	2	3	4th	5	6th	7th	8th	9	10	11	12	13	14th	15th	16	Points	rank
1989 Formula 1 season																		141	1.
Brazil A. Senna	01	11	1	1	1	DNF	7 *	DNF	DNF	1	2	1	DNF	DNF	1	DSQ	DNF
France A. Cheers	02	2	2	2	(5)	1	DNF	1	1	2	(4)	2	1	2	3	DNF	DNF

Legend
colour	abbreviation	meaning
gold	-	victory
silver	-	2nd place
bronze	-	3rd place
green	-	Placement in the points
blue	-	Classified outside the point ranks
violet	DNF	Race not finished (did not finish)
violet	NC	not classified
red	DNQ	did not qualify
red	DNPQ	failed in pre-qualification (did not pre-qualify)
black	DSQ	disqualified
White	DNS	not at the start (did not start)
White	WD	withdrawn
Light Blue	PO	only participated in the training (practiced only)
Light Blue	TD	Friday test driver
without	DNP	did not participate in the training (did not practice)
	INJ	injured or sick
	EX	excluded
	DNA	did not arrive
	C.	Race canceled
		no participation in the World Cup
other	^P / bold	Pole position
	_SR / italic	Fastest race lap
	*	not at the finish, but counted due to the distance covered
	()	Streak results
	underlined	Leader in the overall standings

McLaren MP4 / 5B Honda 3.5 V10

driver	No.	1	2	3	4th	5	6th	7th	8th	9	10	11	12	13	14th	15th	16	Points	rank
1990 Formula 1 season																		121	1.
Brazil A. Senna	27	1	3	DNF	1	1	20 *	3	3	1	2	1	1	2	DNF	DNF	DNF
Austria G. Berger	28	DNF	2	2	3	4th	3	5	14 *	3	DNF	3	3	4th	DNF	DNF	4th

Legend
colour	abbreviation	meaning
gold	-	victory
silver	-	2nd place
bronze	-	3rd place
green	-	Placement in the points
blue	-	Classified outside the point ranks
violet	DNF	Race not finished (did not finish)
violet	NC	not classified
red	DNQ	did not qualify
red	DNPQ	failed in pre-qualification (did not pre-qualify)
black	DSQ	disqualified
White	DNS	not at the start (did not start)
White	WD	withdrawn
Light Blue	PO	only participated in the training (practiced only)
Light Blue	TD	Friday test driver
without	DNP	did not participate in the training (did not practice)
	INJ	injured or sick
	EX	excluded
	DNA	did not arrive
	C.	Race canceled
		no participation in the World Cup
other	^P / bold	Pole position
	_SR / italic	Fastest race lap
	*	not at the finish, but counted due to the distance covered
	()	Streak results
	underlined	Leader in the overall standings

literature

Peter Higham: Formula 1: Car by Car 1980-89. RACE POINT PUB, London 2018, ISBN 978-1-91050-523-6 .

Web links

Commons : McLaren MP4 / 5 - collection of pictures, videos and audio files

Individual evidence

↑ MP4 / 5. In: mclaren.com. Retrieved April 8, 2020 .
↑ MP4 / 5B. In: mclaren.com. Retrieved April 8, 2020 .

[1] MP4 / 5. In: mclaren.com. Retrieved April 8, 2020 .

[2] MP4 / 5B. In: mclaren.com. Retrieved April 8, 2020 .