- Mercedes-Benz W196
Mercedes W196 Category Formula One Constructor Mercedes GP Technical specifications Engine Mercedes-Benz Tyres Continental Competition history Notable entrants Mercedes GP Notable drivers Juan Manuel Fangio
Debut 1954 French Grand Prix Races Wins Poles Fastest laps 9 8 9 Constructors' Championships 0 Drivers' Championships 2 (1954, 1955)
The W196's delayed debut on the 1954 French Grand Prix circuit saw the introduction of the aerodynamic aluminum "Type Monza" body for the high speed track at Reims-Gueux, Fangio and Karl Kling claiming a 1-2 finish and youngster Hans Herrmann posting fastest lap. The same body was later used at Monza, where it picked up its nickname.
Attractive as it was, the streamlined Monza body was not suitable for twistier tracks, leading to defeat at its second race at Silverstone. A conventional open-wheel-version was introduced at the Nürburgring. Fangio, who had already won the first two GPs of 1954 with a Maserati, won this and the two following GPs, securing his 2nd World Championship.
At the 1954 Spanish Grand Prix in late October the low-mounted Mercedes air-intake clogged with leaves, costing the race and leading to its relocation atop the hood.
In the shortened 1955 Formula One season, abbreviated after the 1955 Le Mans disaster, the W196 won all but the 1955 Monaco Grand Prix, Hans Herrmann crashing in practice, and the other three team Mercedes cars failing to finish. A highlight for driver Stirling Moss was his finish 0.2 seconds ahead of stable mate Fangio at his home event, the 1955 British Grand Prix, his first GP win, a race where Mercedes romped home with a 1-2-3-4 finish.
After capturing all three world championships it competed in, Mercedes withdrew from motorsport at the end of the 1955 season. Despite its good track performance, drivers Fangio and Moss described the car in Motor Sport magazine as being "a bit difficult to drive, with a tendency for snap oversteer".
The new 1954 Formula One rules allowed engines of 2.5 litres naturally aspirated or, alternatively, 0.75 litres supercharged. The expected target range for competitive engines was 250 to 300 bhp (190 to 220 kW).
Mercedes' 1939 2-stage supercharged 1.5 litre 64.0×58.0 mm V8 (1,493 cc/91.1 cu in) gave 278 bhp (207 kW) at 8,250 rpm with about 2.7 atm (270 kPa) pressure. Halving this would have only produced 139 bhp (104 kW).
Studies by Mercedes showed that 290 bhp (220 kW) at 10,000 rpm could be achieved from 0.75 litres with a supercharger pressure of 4.4 atm (450 kPa). 390 shp (290 kW) would have been developed with 100 hp (75 kW) being required to drive the supercharger. Fuel consumption would have been 2.3 times higher than a naturally aspirated engine developing the same power. Since 115 bhp/l (86 kW/l) at 9,000 rpm was being developed by naturally aspirated motorcycle racing engines, it was decided that a 2.5 litre engine was the correct choice. This was a significant change of philosophy, since all previous Mercedes-Benz Grand Prix engines since the 1920s had been supercharged.
The 2,496.87 cc (152.368 cu in) straight 8 (76.0×68.8 mm) gave 257 bhp (192 kW) at the 1954 French GP which was its first race. During 1955, this had increased to 290 bhp (220 kW) at 8,500 rpm. The 2,981.70 cc (181.954 cu in) sports car (78.0×78.0 mm) gave 310 bhp (230 kW) at 7,500 rpm and was a bored and stroked version of the F1 engine complete with desmodromic valves and fuel injection. Variable length inlet tracts were experimented with and four wheel drive considered. An eventual 340 bhp (250 kW) at 10,000 rpm was targeted for the 2.5 litre F1 motor.
Current personnel: Bob Bell · Ross Brawn · Jock Clear · Aldo Costa · Nick Fry · Norbert Haug · James Vowles · Geoff Willis
Former personnel (1950s): Alfred Neubauer · Max Sailer · Rudolf Uhlenhaut
Race drivers: 7. Michael Schumacher · 8. Nico Rosberg
Test drivers: TBA
World Champions: Juan Manuel Fangio
European Champions: Rudolf Caracciola
Notable drivers: Louis Chiron · Luigi Fagioli · Hans Herrmann · Karl Kling · Hermann Lang · Stirling Moss · Richard Seaman · Manfred von Brauchitsch
Formula One: W196 · MGP W01 · MGP W02
Grand Prix: W25 · W125 · W154
Cars that competed in the 1954 Formula One season (ex. Indianapolis 500) Cars that competed in the 1955 Formula One season (ex. Indianapolis 500)
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