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Racing the Silver Arrows by Chris Nixon
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Mercedes Benz W154
  Car:   Mercedes W154   Engine:   600 V12
  Maker:   Daimler-Benz   Bore X Stroke:   67 X 70 mm
  Year:   1938   Capacity:   2,962 CC
  Class:   Grand Prix   Power:   425 bhp at 8,000 rpm
  Wheelbase:   107.5   Track:   58.1 in front, 55.6 in rear
  Notes:   Weight 2163 lbs, 6.5x19 front, 7.0x22 rear tires


Mercedes W154The Mercedes M154 was built in response to the new formula for 1938 which specified a maximum capacity of 3,0000 cc for super-charged engines and 4,500 cc for normally aspired cars with a sliding minimum weight scale. The engine for the new car was a 60° V-12 with 48 valves, twin Roots superchargers and no less than nine oil pumps!. The engine used a special fuel mixture which contained methyl alcohol, nitrobenzene, acetone, and sulfuric either. Mercedes W154The car consumed about a liter of fuel for every kilometer (2.8 mpg) traveled. The W154 carried more than 400 liters (88 gal) of fuel in two tanks, one in the tail and the other between the driver's seat and the engine. Some of the fuel was actually used to cool the pistons. The stroke was shortened to allow for maximum piston area while boost was increased to 2.2 atmospheres. The new chassis was a couple of inches shorter than the W125 but the offset of the engine and transmission at an angle to the car's longitudinal axis brought the propeller shaft alongside the driver. This resulted in lowering of the driver seat which when coupled with the lower body shape gave the new car a pronounced low-slung appearance.

Mercedes W154Both Uhlenhaut and the drivers tested the car at the 'Ring and while Lang and von Brauchitsch did not like the car as it tended to break away suddenly, Caracciola was quite positive as it was a low momentum car that needed finesse rather than force to handle.

The 1938 French Grand Prix was the racing year's first major duel between the Mercedes-Benz W 154 Silver Arrows and the rival Antiunion vehicles. The Stuttgart racing team's triple victory reflected its complete dominance of the race. Manfred von Brauchitsch took first place ahead of Rudolf Caracciola and Hermann Lang. Lang, who started from pole position, recorded the fastest lap time .Mercedes would go on to win six out of the eight major races in 1938 with Auto Union taking the remaining two. Rudolf Caracciola was crowned European Champion for the third and last time. During the 1938 season Mercedes produced 14 cars and 19 engines to cover 9 races. Uhlenhaut would later remark that he had an unlimited budget and that he himself had no idea of how much they spent.

Mercedes Benz W154

GEORGE MONKHOUSE was one of the world's greatest motor racing photographers, and his books Motoraces, Motor Racing with Mercedes-Benz and Grand Prix Motor Racing Facts and Figures (1950), are regarded as the principal records of a golden age in motor racing in the 1930s and the immediate post-war era.

Monkhouse was a senior executive of the Kodak company, later their chief engineer in the United Kingdom. He dealt with grand prix, not any other lesser sort of racing, and with Mercedes, not with any lesser make. His views were forthright but were not universally popular in British motor racing circles in the mid-1930s.

He and his friends Dick Seaman and Laurence Pomeroy Jnr saw how it was done by Mercedes and they looked for a similar attitude from the British teams. At that time there was indeed a great gulf between the predominantly amateur albeit well-heeled British teams and the professional, government-backed German racing.
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