Tyrrell 025

**Tyrrell 025**
	Tyrrell 025
Constructor:	Tyrrell
Designer:	Harvey Postlethwaite (Technical Director) ; Mike Gascoyne (Designer)
Predecessor:	Tyrrell 024
Successor:	Tyrrell 026
Technical specifications
Chassis:	Honeycomb sandwich -Monocoque from CFK
Engine:	Ford ED4 / 5, 3,000 cc, 75 ° V8 engine, 3.0 liter naturally aspirated engine
Front suspension:	Double wishbone axle with internal springs and two shock absorbers , operated via push rods
Rear suspension:	Double wishbone axle with internal springs and two shock absorbers , operated via push rods
Weight:	0600 kg (including driver)
Tires:	Goodyear
Petrol:	Eleven
statistics
Driver:	18. Jos Verstappen 19. Mika Salo ;
First start:	1997 Australian Grand Prix
Last start:	1997 European Grand Prix
World Cup points:	2
Podiums:	-
Leadership laps:	-

The Tyrrell 025 was the 29th Formula 1 - racing cars of Tyrrell . The 025 was used in the 1997 season and designed by Harvey Postlethwaite . The car was powered by a Ford ED4 / 5 V8 engine with 3 liter displacement. The tires came from the US tire company Goodyear , the fuel from Elf .

Technology and development

The car - the basis of the plans was last year's model 024 - was developed by Harvey Postlethwaite in his own factory in Ockham, County Surrey (England). Postlethwaite's team consisted of chassis designer Tim Densham , gear engineer Gary Thomas, and composites expert Nigel Leaper . The team was briefly assisted by McLaren's suspension engineer, Chris Cooney . Simon Barker was responsible for the production of the car.

The car looked like a new beginning compared to the previous year's model. Instead of the Yamaha ten-cylinder engines previously used, Tyrrell was reliant on Cosworth customer engines this season . Tyrrell was not given access to the manufacturer's ten-cylinder engines; they went exclusively to the Stewart Grand Prix. Tyrrell therefore had to use eight-cylinder engines from the ED series , which conceptually went back to the HB engine constructed in 1988 . Tyrrell touted the change to eight-cylinder engines as a new start. In theory, V8 engines are lighter than V10 engines, but Cosworth's outdated ED range was around 27 kilograms heavier, 20 millimeters wider and 220 millimeters higher than the previous year's engine from Yamaha. Overall, it was worse than a V10 engine in the areas in which it should have shown its advantages. In fact, at 130 kg, the ED4 was the heaviest engine on the grid in 1997 - the ten-cylinder engine developed by the McLaren team at Ilmor was 15 kg lighter - and “not very strong”. Tyrrell opened its own section in its Ockham factory to further develop the customer's engine. In the end, it was possible to increase the engine's performance by eight percent compared to the ED3 versions used by Minardi last year. The plan was to bring the modified ED5 to the start for the race in San Marino . This contained new cylinder heads, a revised lower part of the engine and a new injection system and should be around 15 percent better than the ED4 drive units at a maximum of 15,000 revolutions per minute. Nevertheless, the ED remained one of the weakest engines in the field. Only the eight-cylinder Hart engine used by Minardi was even weaker.

The most striking difference compared to the previous year was the aerodynamic work on the front wing. The work, led by Gascoyne, was carried out in the University of Southampton wind tunnel . The nose of the car was now placed much higher compared to the Tyrrell 024 . In addition , so-called X-Wings were installed in races in which a lot of contact pressure is required . These X-Wings, named after a spaceship in Star Wars , were wings protruding on both sides next to the driver. Many teams copied this concept, but during the 1998 season these extra wings were banned due to safety concerns.

During the 1997 season, a Hydrolink suspension was developed together with the Dutch technology company Koni . Such a system was last used in 1985, but with little success.

An independently developed sequential semi-automatic transmission with six gears was used as the transmission.

Racing history

The Tyrrell 025 was the last Formula 1 car in the time of founder Ken Tyrrell as team principal. The car was officially unveiled on January 20, 1997 at the Capital Radio Cafe in London. There was some irony and joke attached to this idea. The chief developer Postlethwaite countered a statement by the new Stewart team that they were the first to develop their car entirely on the computer, and that Tyrrell had not been using the drawing board since 1989 .

The chassis was considered solid and promising at the start of the season, but the relatively weak Ford V8 engine forced the team to fight for the last places with Minardi. Spread over the year, there were eight engine defects with a total of 18 failures. Negative highlights were the races in Australia , Canada , France , Great Britain and Italy , where neither of the cars used did not reach the finish. Finally, it was possible to secure the penultimate place in the constructors' championship ahead of Minardi through a clever tactic during the race in Monaco , when Salo did not even go into the pits and was able to keep fifth place after the two-hour limit.

Painting and sponsorship

As in the previous year, the Tyrrell was kept completely in white with black rear and front wings. The main sponsor was the US auto parts supplier PIAA , which advertised with its name on the rear wing, the nose, the headrest and the side radiator. The front wing was shared by the British charter airline European Aviation , the tire supplier Goodyear and the Japanese electronics company Epson . European Aviation also had a seat on the side of the rear wing; The engine supplier Ford advertised on the airbox and nose .

A major problem in 1997 was the lack of sponsors. Fondmetal and Mild Seven switched to Minardi with their driver Ukyo Katayama , Korean Air joined Benetton and Motorola and Hoxsin Futures ended their involvement in Formula 1.

driver

The 1997 riders were Jos Verstappen , who was previously under contract with Arrows , and Mika Salo . Last year's driver Ukyo Katayama switched to Minardi . The Formula 3000 driver Toranosuke Takagi was nominated as a substitute for Emmanuel Collard , who had migrated to Prost .

Results

driver	No.	1	2	3	4th	5	6th	7th	8th	9	10	11	12	13	14th	15th	16	17th	Points	rank
Formula 1 World Championship 1997																			2	10.
Netherlands J. Verstappen	18th	DNF	15th	DNF	10	8th	11	DNF	DNF	DNF	10	DNF	DNF	DNF	12	DNF	13	16
Finland M. Salo	19th	DNF	13	8th	9	5	DNF	DNF	DNF	DNF	DNF	13	11	DNF	DNF	10	DNF	12

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

Web links

Commons : Tyrrell 025 - collection of images, videos and audio files

Individual evidence

↑ Cimarosti: Das Jahrhundert des Rennsport, pp. 508, 515.

[1] Cimarosti: Das Jahrhundert des Rennsport, pp. 508, 515.