1937 MercedesBenz W125 Images Specifications and Information

12 Апр 2015 | Author: | No comments yet »
500 w08

With the rapid development of Grand Prix racing was to constant changes in the 1920s and 1930s and sport’s governing (AIACR) struggled to create a set of regulations that would with the various engine raced at the time. In 1932 came up with a Grand formula with a maximum of 750 kg (sans fluids, wheels and for 1934, 1935 and 1936. The Internationale des Automobiles Clubs figured this maximum sufficiently reign in and level They were proven wrong as Auto Union and produced some of the fastest and Grand Prix racers. The reserved as much weight as for massive supercharged engines and off weight from the chassis and by cross-drilling every component. to say this is a very dangerous To set things straight the AIACR up new displacement based regulations for the period, but they could not in time and the changes were and another season was run under the 750 kg

Mercedes-Benz had dominated the first two of the 750 kg era with the straight eight W25, but in 1936 found a adversary in Bernd Rosemeyer and his Auto Union. Anxious to set straight, the company’s head Rudolf Uhlenhaut set about the new W125 for 1937 early. At the he still believed that the limits (4.5 litre for Aspirated engines and 3.5 litre for induction engines) would be from 1937 onwards. he learned of the delays, Uhlenhaut on and turned the W125 in a 750 kg racer of the 850 kg racer it was intended to be. Even the car was prospected to have a 3.5 litre the engineers managed to fit a 5.6 litre eight in the chassis, which was and heavier than the one used in the Sporting double overhead four valves per cylinder and a Supercharger this all steel produced a staggering 646 bhp. The alone weighed over 220 kg, little over 500 kg for the chassis, brakes and body.

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Uhlenhaut realised that the amount of power was absolutely if it could not be put on the road properly. the tubular frames of Grand cars flexed considerably, but by nickel-chrome molybdenum oval Uhlenhaut created a very frame. This gave him greater control over the and effectively the racer’s handling Like the W25, the W125 double wishbone / coil front suspension, but with longer wishbones. This for much more travel and suspension required because of the frame. For the rear suspension an but rarely tried system was off; the DeDion axle in the late 19th century. It the swing axles, which massive problems with and wheelspin as under pressure the wheels would not be parallel. To the wheels parallel they connected by an articulated tube behind the final drive Equipped with a ball in the that fitted into a in the final drive unit, the could move up and down but not sideways. Thanks to an oscillating in the middle of the axle, the wheels move up and down separately. The were kept in place by arms. The DeDion setup the benefits of a live axle a much lower unsprung and the additional freedom of movement of the axles.


Early in the 1937 season, the experimented with different setups. In the original configuration, the would blow air into the After a trial run of two races, a was adopted where the already air/fuel mixture was passed the Supercharger and into the cylinders. affected both the power low the rev range and to a lesser extent at revs. In the hands of Richard Manfred von Brauchitsch, Herman and Rudolf Caracciola the W125 the season with six major and over a dozen podium Taking four wins, Caracciola recaptured the championship. At the end of the successful season, the extensively regulations left the W125 The highly advanced chassis was for its three litre V12 engined the W154, which continued the based company’s Grand stronghold. It would take the 1980s before a Grand car was back on the power level of the and this time with a brakes and tires that actually cope with all brute force.

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interesting records



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