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Mercedes-Benz W154
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Mercedes-Benz W154
The Mercedes-Benz W154 was a Grand Prix racing car designed by Rudolf Uhlenhaut. The W154 competed in the 1938 and 1939 Grand Prix seasons and was used by Rudolf Caracciola to win the 1938 European Championship.
The W154 was created as a result of a rule change by the sports governing body AIACR, which limited supercharged engine capacities to 3000cc. Mercedes' previous car, the supercharged 5700cc W125, was therefore ineligible. The company decided that a new car based on the chassis of the W125 and designed to comply with the new regulations would be preferable to modifying the existing car.
Although using the same chassis design as the 1938 car, a different body was used for the 1939 season and the M154 engine used during 1938 was replaced by the M163. As a result of the new engine, the 1939 car is often mistakenly referred to as a Mercedes-Benz W163.
For the 1938 season, Grand Prix racing's governing body AIACR moved from a formula limited by weight to one by engine capacity. The new regulations allowed a maximum capacity of 3000cc with a supercharger or 4500cc without. This meant Mercedes-Benz's previous car, the supercharged 5700cc W125, was ineligible to continue. Its new car was based on the W125 chassis, with a supercharged 3000cc engine determined after both types had been tested.
The chassis was largely based on that of the preceding W125. The frame was constructed using oval tubes made of nickel-chrome molybdenum to provide stiffness.
The suspension was also near identical to the W125. The rear consisted of a De Dion tube, designed to keep the rear wheels parallel using a solid tubular beam. It also had hydraulic rear dampers, adjustable from within the cockpit during a race.
The bodywork of the W154 was aluminium, left unpainted like its predecessors, making it another of Mercedes' famed Silver Arrows.
The new M154 engine was a 2,961 cc (180.7 cu in) capacity 67 mm × 70 mm (2.64 in × 2.76 in) supercharged V12, attaining an output between 425 and 474 horse power. In 1939, the 2-stage supercharged version recorded a test bed power of 476 BHP (483 PS) at 7,800 rpm. Each one of these engines reputedly cost 89,700 German reichsmarks in 1938 (USD $1 million today).
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Mercedes-Benz W154
The Mercedes-Benz W154 was a Grand Prix racing car designed by Rudolf Uhlenhaut. The W154 competed in the 1938 and 1939 Grand Prix seasons and was used by Rudolf Caracciola to win the 1938 European Championship.
The W154 was created as a result of a rule change by the sports governing body AIACR, which limited supercharged engine capacities to 3000cc. Mercedes' previous car, the supercharged 5700cc W125, was therefore ineligible. The company decided that a new car based on the chassis of the W125 and designed to comply with the new regulations would be preferable to modifying the existing car.
Although using the same chassis design as the 1938 car, a different body was used for the 1939 season and the M154 engine used during 1938 was replaced by the M163. As a result of the new engine, the 1939 car is often mistakenly referred to as a Mercedes-Benz W163.
For the 1938 season, Grand Prix racing's governing body AIACR moved from a formula limited by weight to one by engine capacity. The new regulations allowed a maximum capacity of 3000cc with a supercharger or 4500cc without. This meant Mercedes-Benz's previous car, the supercharged 5700cc W125, was ineligible to continue. Its new car was based on the W125 chassis, with a supercharged 3000cc engine determined after both types had been tested.
The chassis was largely based on that of the preceding W125. The frame was constructed using oval tubes made of nickel-chrome molybdenum to provide stiffness.
The suspension was also near identical to the W125. The rear consisted of a De Dion tube, designed to keep the rear wheels parallel using a solid tubular beam. It also had hydraulic rear dampers, adjustable from within the cockpit during a race.
The bodywork of the W154 was aluminium, left unpainted like its predecessors, making it another of Mercedes' famed Silver Arrows.
The new M154 engine was a 2,961 cc (180.7 cu in) capacity 67 mm × 70 mm (2.64 in × 2.76 in) supercharged V12, attaining an output between 425 and 474 horse power. In 1939, the 2-stage supercharged version recorded a test bed power of 476 BHP (483 PS) at 7,800 rpm. Each one of these engines reputedly cost 89,700 German reichsmarks in 1938 (USD $1 million today).
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