7 Янв 2015 | Author: | No comments yet »
Mercedes-Benz W125

Daimler-Benz Aktiengesellschaft, Untertьrkheim,

In 1883 Karl Benz the Benz Co Rheinishe Gasmotoren in Mannheim and three years the first Benz cars seen on the roads. Gottlieb had built engines since and 1890 he and Max von Duttenhofer founded to deliver car engines to Panhard et and Peugeot. Both companies and were among the earliest in car racing. The Austrian businessman Jellinek became interested and two cars from Daimler. Jellinek became the prime of Daimler cars. When died in 1900 von Duttenhofer leading the company with the Wilhelm Maybach as technical The same year there was a when their test Wilhelm Bauer had a fatal in a race at Nice with a car by Jellinek.

The car had been too short and and Jellinek ordered a new lower, and more stable car to be constructed to his specifications. He ordered 36 cars two reservations, he wanted the sole to sell Daimler cars in countries and he wanted the cars to be after his daughter Mercйdиs. The new car its debut in 1901 and was such a design that it can be considered the modern car. Soon all built cars were Mercedes. In 1903 the factory was to Untertьrkheim where it has been That same year the first major race when the Belgian Camille won the Gordon Bennett race in But it was almost a non-event for the team as a fire had destroyed the race and new cars had to be borrowed from owners in the last moment. followed up their reputation as a to be reckoned with by winning the French GP with Christian behind the wheel, its main being a Benz driven by Hйmery.

Benz had as early as in announced that he would not cars for racing, thus a conflict between him and co-owner Ganss that ended in resigning in 1903. Ganss had a car built and raced without success. In 1904 Benz to the company. Then there was no action seen by Benz 1907.

Mercedes cars had been used for attempts on the speed record with K. Vanderbilt, Pierre de Caters and Bowden being succesful. In Benz produced the 21.5 200 bhp Blitzen Benz, the fastest man vehicle of the pre-war era. by Hйmery, Barney Oldfield and Burman it shattered the land record. In 1914 Lautenschlager proved victorious, leading the team to a triple victory in the GP in what has been called the of the century.

With the French GP closed to the factories after the war Mercedes their interest to other of racing as Indianapolis and Targa And Benz built the sensational engined streamlined Tropfen in 1923. That same Ferdinand Porsche was employed by But Porsche’s Grand Prix the first Mercedes with an 8 engine, produced a car with handling as proved by Count fatal accident at the 1924 GP.

Things were changing. On 1 1926 the integration between and Benz became a fact Daimler-Benz AG. Mercedes junior Rudolf Caracciola was turning a top driver, being the surprise of the 1926 German GP while driver Alfred Neubauer it more interesting to organize to drive and debuted as team for Mercedes at the 1926 Solitude GP.

was no interest in building GP cars in the new and the racing department had to do with cars of the S, SS and SSK type. Bad world led to that Mercedes-Benz retired racing in 1931, the factory to support Caracciola as semi-privateer a SSKL car. With car Caracciola became the first non to win the Mille Miglia, a performance only Stirling Moss has able to repeat. The next even that support had to be Caracciola moving on to Alfa with a promise to return times got better.

In 1934 returned to GP racing creating a with their streamliner independent suspension. With the of the 1936 season Mercedes-Benz GP racing for the rest of the pre-war With the factory destroyed the Second World War it was not until the 50s Mercedes could think racing again. Starting off the 300SL sports cars the was back at Formula 1 racing at the French GP, Juan Manuel taking both the 1954 and titles for the team. But after the decision was taken to retire both sports car and GP racing, a probably prompted by the infamous Le catastrophe where Pierre Mercedes 300SLR crashed the grand stand with 80+ It would take 34 years the Silver Arrows returned.

The 24/100/140 was the prestige flagship of the joint Daimler-Benz AG company. by Ferdinand Porsche the car with its 375 cm first appeared in 1925. The 6 cyl engine (94 x 150 mm = 6242cc), cast as one in an aluminium-silicon alloy with a iron top, delivered 100 When the gas pedal was pressed to the it temporarily engaged the 1.41 Ata giving a total of 140 bhp/3100 For 1926 an upgraded variant and also a shorter sporty called K (Kurz) with a 340 cm The improved engine gave 160 bhp supercharger).

Not able to build a Grand Prix car the factory to derive the 24/100/140K into a car. Appearing in 1927 the S had a new lower body, a completely chassis, improved brakes, and the had been moved 30 cm backwards to the weight distribution. The engine was to 6,7 L (98 x 150mm = 6789cc), had dual and a 1.5 Ata compressor giving 180 bhp/3000 rpm in circumstances and 220 bhp in works specification higher compression rates and fuel.

In 1928 a two seater variant appeared. Called SS Sport) it had a higher engine than the S and the engine was further to 7.1 L (100 x 150mm = 7069cc). 200 bhp normally with a special camshaft and a 1.69 Ata compressor it up to 275 bhp/3300 rpm in race conditions. race cars even a 1.83 Ata elephant blower.

A model for mountain climbs, the SSK Sport Kurz), appeared in with a 295 cm wheelbase. The engine was during 1929-30 to finally 310 bhp/3300 rpm with 1.83 Ata

Altogether 149 type S, 114 type SS and 31 or 32 SSK were built. (Actually 155 + 102 + 37, but S and seven SSK cars were to SS spec and one S car to SSK spec). The SSK chassis were: 35986-35990, 36047-36056, 36241-36260 and 36393.

As Mercedes-Benz from racing in 1931, the continued to support their as semi-privateers with special (Super Sport Kurz cars. By using thinner for the frames and by drilling a multitude of in the chassis the cars were some 120 kg lighter than SSKs.

Five of the SSKs converted in 1931 by the factory to SSKL The very first was raced by Caracciola/Sebastian at the 1931 Miglia, which they With the car Caracciola also victorious in the 1931 German GP and became hillclimb champion in Two of the cars were rebuilt as the one von Brauchitsch took to victory in the Avusrennen and the one Otto Merz had his accident with at practicing for the Avusrennen.

Additionally to the early factory of 1931, five customer were changed in 1932 and one in 1933 and 1934 to SSK L making a of 12 (according to Tragatsch). The engines of later models were not changed to the desired 310 bhp. The W25 was a combination of traditional and revolutionary After having considered but a rear engined design followed a scheme used in type 380 passenger car.

The was of a traditional box section type, to save weight. The engine was of traditional type, a 3.4 litre with forged steel in two 4 cylinder blocks with on water jackets and with overhead camshafts. The one piece had 5 bearings. A vertical Roots was placed at the front end, at double engine speed and a pressure of 1.66 atmospheres. The pushed the air into two double carburettors, a relief valve out the surplus pressure in the air when the lifted the gas, creating the high pitched Mercedes-Benz

The aluminium gearbox was revolutionary, in unit with the rear with the ratios working The input shaft was below the shaft lowering the propeller and thus the driver seat. To be to transmit the available horsepower the wheels independent suspension was throughout with swing rear and wishbones in front. The wishbones were connected to springs carried inside a tube.

The car had a streamlined body of hand-beaten aluminium alloy in white. The Lockheed hydraulic had aluminium drums 50 mm wide a diameter of 400 mm.

Work started in 1933 and the new car was ready for testing in 1934. Von Brauchitsch had a crash at due to tyre failure and the next Henne had a crash in the second car at after having problems the differential. The new cars were at the Avusrennen but withdrawn after because of carburettor problems. they made their at the Eifelrennen. Legend says failed the 750 kg limit at the weight-in by 1 kg and during the night the white and filler was removed and replaced by a coat of aluminium color. The day the cars then passed the check and went on to win their race. However late has shown that the 1934 was run to a free formula with no limits so there is something with the story. Anyway, the reason, from that onwards the cars featured in the color that had already adopted by Auto Union.

To answer the challenge from Union the engine was replaced by the M25AB and then the M25B adding 70 bhp at a cost of 4 kg more weight. The M25 B engine was also during the 1934 speed attempt, the engine giving 430 bhp a special fuel mixture.

was a bad crash during practice for the GP where von Brauchitsch fractured his but otherwise the season was quite with four GP victories and one victory. However there things that could be for 1935. Especially the gearbox had to be difficult during downshifts. For the season four new chassis built and the old cars were The M25B engine was used the smaller M25AB supercharger the M25A engines were by the junior drivers and as spares. A new formula for the season increased the power. The new cars featured brake cooling, a redesigned user friendly gearbox and 65 mm brakes. A ZF self-locking differential and an air for the supercharger were introduced the season. Late in the season the 4.3 high torque M25C was introduced. A streamlined variant closed cockpit was used by at Avusrennen and Caracciola and Fagioli cars with small cowls in that same

1935 proved to be the best ever for Mercedes with 9 victories including a 1-2-3 at the GP and with Caracciola becoming the Champion. However, Geier one car in a serious crash at the Swiss GP.

Mercedes-Benz W125

In the W25 cars had an oil cooler added and used mainly as spares. and von Brauchitsch raced them at the GP and von Brauchitsch prefered the old car at the Eifelrennen Lang probably also the old car.

Mercedes-Benz W25 (36 or kurz) Prix 750 kg)

To face the challenge the new cars of Auto Union and Romeo the Mercedes factory to construct a new 600 bhp 5.6 litre V12 for the 1936 This D type engine known as the DAB as it had the same bore and as the AB engine. When the first was assembled during the summer of it proved to be seriously overweight kg against 185 kg for the old engine).

To fit this heavy engine the cars under the 750 kg limit considerable changes to be done to the cars to save 110 kg of weight. made the radical decision to cut off 25 cm the wheel base of their GP Other news in the car included a gearbox and a de Dion rear (It has often been said the Mercedes W125 was the car that the de Dion axle, but the 1936 was in fact the first.) The new car was in fact so that the tall von Brauchitsch not fit properly into it. The exhaust was also new with the pipe lower to the ground. Somehow the managed to squeeze the engine in the weight limit only to that the weight distribution was that the car was totally undriveable.

a 4.7 litre 450 bhp variant of the straight 8 known as the ME25 had to be built in a and put into the new cars. But that was to too much of the old engine block. the season the cars suffered numerous engine failures. The car had bad road holding, it was oversteering and the wheel gave a heavy to the drivers. The chassis wasn’t enough for the suspension to work in a way. To cure the problems held an extensive test at Nьrburgring in August 1936 48 chassis changes. After a new at the Swiss GP the Mercedes-Benz team from racing to reorganize for 1937.

The car and the DAB engine were developed into streamlined breakers where the cars in curves was a minor consideration.

The W125 was the ultimate pre war Grand car with the stongest engine in Grand Prix racing the turbo era in the 1980s.

Work in August 1936 under of Wagner using ideas by Uhlenhaut during testing of the The frame was of an oval tube with 5 crossmembers strenghtening the considerably. The wheelbase was increased to 280 cm.

The de rear axle was retained but the other way with the center to a slot in the gearbox combining rigidity with vertical The springs were replaced by bars. The front suspension was new with long wishbones and an vertical coil spring greater movement to the wheels. The dampers were replaced by dampers. The new engine, called the F or the M125, was similar to the earlier eights but with a new longer to accomodate the larger bore. were later increased 5 to 9. With a weight of 223 kg the new 5.6 litre was only 20 kg heavier than the 3.4 litre A type. The old gearbox was by a constant mesh type gearbox. The Lockheed hydraulic now had double shoes and aluminium with a diameter of 400 mm and a width of 72 mm. A 240 fuel tank in the rear it possible to run a Grand Prix on a one strategy.

The prototype chassis was tested in 1937 with a ME25 At the Eifelrennen the pressure carburation was replaced by a suction carburation on Kautz’ car. It was used at the Vanderbilt cup on Seaman’s car with so results that the new system was to all cars at the next race. The new with the supercharger compressing the mixture sucked in from the increased the engine power as much as 30 % at low revs and 11% at full It also ended the typical engine scream.

By June the car had become 8 kg overweight and had to be slimmed Chassis stiffening was reduced and constructions were adopted for brakes and seat.

With 6 9 second places and 5 third the W125 dominated the 1937 bringing a new championship for Caracciola.

LOG W 125:

Mercedes-Benz W125
Mercedes-Benz W125
Mercedes-Benz W125
Mercedes-Benz W125
Mercedes-Benz W125

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