| Revision as of 20:21, 4 February 2018 editPc13 (talk | contribs)Extended confirmed users9,791 edits →Development: Why is this here? Brawn was not F1 managing direction in 1989← Previous edit | Revision as of 08:17, 5 February 2018 edit undoI dream of horses (talk | contribs)Autopatrolled, Extended confirmed users, Page movers, New page reviewers, Pending changes reviewers, Rollbackers572,256 editsm Checking Misplaced Pages for errors, removed stub tag, typo(s) fixed: competitve → competitive using AWBNext edit → | ||
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| For the 1989 season, ] realised that the ] produced V12 Jaguar sports prototypes were lacking competitiveness, especially in short sprint events. The small, light weight forced induction engines used by competitors such as ] outperformed the big, naturally aspirated engines that Jaguar Sport had been using for a long time. | For the 1989 season, ] realised that the ] produced V12 Jaguar sports prototypes were lacking competitiveness, especially in short sprint events. The small, light weight forced induction engines used by competitors such as ] outperformed the big, naturally aspirated engines that Jaguar Sport had been using for a long time. | ||
| Jaguar started development of a new engine in order to stay |
Jaguar started development of a new engine in order to stay competitive. The Rover's V64V 3.5 L ] originally designed for the ] rally car proved to be an ideal engine for the new car, with its weight of just {{cvt|143|kg|lb|0|abbr=on}} and consistent performance. Jaguar developed two variants of the engine, the 3.0 L variant was intended for competition in the IMSA series and the 3.5 L variant was intended for competition in World sports car championship. Both variants were fitted with two ] turbochargers and produced varied power outputs of {{cvt|650|hp|PS kW|0|abbr=on}} and {{cvt|750|hp|PS kW|0|abbr=on}} respectively depending on the level of boost. | ||
| With the help of ], ] designed a new chassis for the car which was compact and the evolution of the ] monocoque of the previous ]/]. The chassis incorporated double wishbone suspension with push-rod actuated dampers front and rear with the rear suspension mounted overboard. This helped free up more space for the ground-effect tunnels in order to improvise handling. Two different bodies were designed for the car as it was to compete in two different championships. The more aerodynamically bodied car was dubbed the XJR-10 and the other one, the XJR-11. |
With the help of ], ] designed a new chassis for the car which was compact and the evolution of the ] monocoque of the previous ]/]. The chassis incorporated double wishbone suspension with push-rod actuated dampers front and rear with the rear suspension mounted overboard. This helped free up more space for the ground-effect tunnels in order to improvise handling. Two different bodies were designed for the car as it was to compete in two different championships. The more aerodynamically bodied car was dubbed the XJR-10 and the other one, the XJR-11.<ref>{{cite web|url=http://www.ultimatecarpage.com/car/776/Jaguar-XJR-11.html|title= Development of the XJR-11|author=Wouter Melissen|date=2012-01-18|accessdate=2017-12-18}}</ref> | ||
| ==Racing History== | ==Racing History== | ||
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| ** Valvetrain: DOHC, 4-valves per cylinder | ** Valvetrain: DOHC, 4-valves per cylinder | ||
| ** Injection: ] fuel injection | ** Injection: ] fuel injection | ||
| ** Aspiration: Forced induction (] with two ] ]) | ** Aspiration: Forced induction (] with two ] ]s) | ||
| ** Power: {{cvt|750|hp|PS kW|0|abbr=on}} at 7,500 rpm | ** Power: {{cvt|750|hp|PS kW|0|abbr=on}} at 7,500 rpm | ||
| * '''Drivetrain''' | * '''Drivetrain''' | ||
| ** Body: Carbon composite body | ** Body: Carbon composite body | ||
| Line 47: | Line 46: | ||
| ** Brakes: ] cross ventilated discs with 6-piston callipers front and rear | ** Brakes: ] cross ventilated discs with 6-piston callipers front and rear | ||
| ** Layout: Rear-wheel drive | ** Layout: Rear-wheel drive | ||
| * '''Performance''' | * '''Performance''' | ||
| ** Power to weight ratio: 0.83 |
** Power to weight ratio: 0.83 hp/kg | ||
| ** Top speed: {{cvt|229|mi/h|km/h|0|abbr=on}} (quoted) | ** Top speed: {{cvt|229|mi/h|km/h|0|abbr=on}} (quoted) | ||
| ==References== | ==References== | ||
| {{ |
{{reflist}} | ||
| ==External links== | ==External links== | ||
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| ] | ] | ||
| ] | ] | ||
| {{Motorsport-stub}} | |||
Revision as of 08:17, 5 February 2018
Motor vehicle| Jaguar XJR-11 | |
|---|---|
 | |
| Overview | |
| Manufacturer | Jaguar Cars |
| Production | 1989–1990 |
| Designer | Tony Southgate with Ross Brawn for TWR |
| Body and chassis | |
| Class | Racing car |
| Body style | 2-door Coupé |
| Layout | RMR layout |
| Related | Jaguar XJR-10 |
| Powertrain | |
| Engine | 3.5 L 90 degree Rover V64V Twin-Turbocharged V6 |
| Transmission | TWR 5-speed manual |
| Dimensions | |
| Curb weight | 900 kg (1,984 lb) |
| Chronology | |
| Predecessor | Jaguar XJR-9 |
| Successor | Jaguar XJR-14 Jaguar XJR-16 |
The Jaguar XJR-11 was a sports-prototype racing car introduced for the 1989 World Sports Prototype Championship while its sister car, the XJR-10 was introduced to compete in IMSA series races.
Development
For the 1989 season, Tom Walkinshaw realised that the TWR produced V12 Jaguar sports prototypes were lacking competitiveness, especially in short sprint events. The small, light weight forced induction engines used by competitors such as Mercedes-Benz outperformed the big, naturally aspirated engines that Jaguar Sport had been using for a long time.
Jaguar started development of a new engine in order to stay competitive. The Rover's V64V 3.5 L V6 engine originally designed for the MG Metro 6R4 rally car proved to be an ideal engine for the new car, with its weight of just 143 kg (315 lb) and consistent performance. Jaguar developed two variants of the engine, the 3.0 L variant was intended for competition in the IMSA series and the 3.5 L variant was intended for competition in World sports car championship. Both variants were fitted with two Garett turbochargers and produced varied power outputs of 650 hp (659 PS; 485 kW) and 750 hp (760 PS; 559 kW) respectively depending on the level of boost.
With the help of Ross Brawn, Tony Southgate designed a new chassis for the car which was compact and the evolution of the carbon fibre monocoque of the previous XJR-8/XJR-9. The chassis incorporated double wishbone suspension with push-rod actuated dampers front and rear with the rear suspension mounted overboard. This helped free up more space for the ground-effect tunnels in order to improvise handling. Two different bodies were designed for the car as it was to compete in two different championships. The more aerodynamically bodied car was dubbed the XJR-10 and the other one, the XJR-11.
Racing History
The XJR-11 was entered into competition in July 1989 at Brands Hatch and as expected, faced strong competition from the V8 powered Sauber-Mercedes 'Silver Arrow' cars (the C8 and C9). The team of Lammers and Patrick Tambay managed to finish sixth in the debut race. The car faced reliably issues throughout the year and was able to secure a single victory in the 1990 season at Silverstone. The XJR-11 wasn't used at the 24 hours of Le Mans event unlike the XJR-9 and a new car, the XJR-12 was developed to compete in that event. The car's career was short lived and it was no longer eligible to compete in events due to the new rules of the FIA for the 1991 season. With only one victory in its short career, it was one of the most unsuccessful sports prototypes produced by TWR with the major reason for its failure being unreliability but its 3.5 litre engine would later find use in the Jaguar XJ220.
Specifications
- Engine
- Configuration: Rover 90 degree V64V V6 engine
- Position: Mid, Longitudinally mounted
- Construction: Aluminium alloy block and heads
- Displacement: 3.5 L (214 cu in) (3,498 cc)
- Bore/Stroke: 94 mm (3.7 in)/84 mm (3.3 in)
- Valvetrain: DOHC, 4-valves per cylinder
- Injection: Bosch fuel injection
- Aspiration: Forced induction (twin-turbo with two Garett turbochargers)
- Power: 750 hp (760 PS; 559 kW) at 7,500 rpm
- Drivetrain
- Body: Carbon composite body
- Chassis: Carbon fibre and Kevlar monocoque
- Suspension: Double wishbones, push-rod actuated coil springs over dampers with anti-roll bar (front)
double wishbones, coil springs over dampers with anti-roll bar (rear) - Brakes: AP Racing cross ventilated discs with 6-piston callipers front and rear
- Layout: Rear-wheel drive
- Performance
- Power to weight ratio: 0.83 hp/kg
- Top speed: 229 mph (369 km/h) (quoted)
References
- ^ Wouter Melissen (2012-01-18). "History of the XJR-11". Retrieved 2017-12-18.
- Wouter Melissen (2012-01-18). "Development of the XJR-11". Retrieved 2017-12-18.