Mercedes-Benz W194
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| Category | Endurance racing |
|---|---|
| Constructor | Mercedes |
| Designer(s) | Rudolf Uhlenhaut |
| Technical specifications | |
| Engine | 3.0 L M194 I6 |
| Competition history | |
| Notable entrants | Daimler Benz AG |
| Notable drivers |  Hans Klenk Karl Kling Hermann Lang Rudolf Caracciola John Fitch |
The Mercedes-Benz W194 (also 300 SL) is the Mercedes-Benz entry for the 1952 Sportscar racing season, its first after World War II.
Powered by a 3.0 litre SOHC straight-6, it ran off an impressive string of victories that included 24 Hours of Le Mans, Bern-Bremgarten, the Eifelrennen at Nürburgring, and Mexico's Carrera Panamericana.[1]
Only ten W194s were made.[2] It was succeeded by the Mercedes-Benz 300 SLR. This led to the iconic Mercedes 300 SL W198 Gullwing road car in 1954.[2]
Design
The racing W194 300 SL was built around a mere 140-150 pound welded aluminium tube spaceframe chassis to offset the relatively underpowered M194 engine.[2] Designed by Daimler-Benz's chief developing engineer, Rudolf Uhlenhaut, the metal skeleton saved weight while still providing a high level of strength. Since it enveloped the passenger compartment traditional doors were impossible, giving birth to the model's distinctive gull-wing arrangement.
Like the production 300 SL "Gullwing" it birthed, the W194 borrowed its overhead cam straight 6 M194 engine from the regular four-door 300 (W189 "Adenauer") luxury tourer introduced in 1951, with triple two-barrel Solex carburetors from the exclusive 300 S (W188). Designed with an innovative diagonal aluminium head (that allowed for larger intake and exhaust valves) and canted at a fifty-degree angle[2] to the right to fit under the W194's much lower hoodline, it produced 175 hp (130 kW) in racing trim, considerably up from the 300s' 150 hp (112 kW). Maximum torque was 207 N⋅m (153 lb⋅ft).[2] Top speed was approximately 160 mph (257 km/h).[3]
Aerodynamics played an important role in the 2497 pound[2] car's speed. Unlike many cars of the 1950s, steering was relatively precise and the four-wheel independent suspension allowed for a reasonably comfortable ride and markedly better overall handling. However, the rear swing axle, jointed only at the differential, not at the wheels themselves, could be treacherous at high speeds or on imperfect roads due to extreme changes in camber. The enormous fuel tank capacity also caused a considerable difference in handling depending on the quantity of fuel on board.
Racing history
In 1952, the W194[1] scored overall wins at the 24 Hours of Le Mans, in Bern-Bremgarten, in the sportscar race of the Eifelrennen at the Nürburgring, and in Mexico's Carrera Panamericana. It also managed second and fourth places at its first outing, the Mille Miglia in 1952 and won the Rally Stella Alpina in 1955 in its last edition.[4]
These successes, especially those on the high speed open road races, were rather surprising as the W194 engine was fitted only with carburetors, producing 175 hp (130 kW), which was not only less than the competing cars by Ferrari and Jaguar, but also less than the 300 SL road car developed from it and introduced 1954. Low weight and low aerodynamic drag made the W194 fast enough to be competitive in endurance races.
Production 300 SL
Daimler-Benz's official importer in the USA, New York Mercedes distributor Max Hoffman, suggested to company management in Stuttgart that a street version of the W194 would be a commercial success, especially in America. The result was an icon, the 1954 Mercedes-Benz 300 SL Gullwing (W198).
More than 80% of the vehicle's total production of approximately 1400 units were sold in the US, making the Gullwing the first Mercedes-Benz widely successful outside its home market and thoroughly validating Hoffman's prediction. The 300 SL is credited with changing the company's image in America from a manufacturer of solid but staid luxury automobiles to one capable of rendering high-performance sports cars.
The W194 today
The W194 is regarded by some as the most important post-World War II Mercedes-Benz made.[2] It is unknown how many of the original 10 W194s manufactured remain. Only one never raced, Chassis #00002, which served as a parts and training car. It has been fully restored by a Mercedes-Benz team and though not for sale received multiple offers of $15 million USD in 2012.[2]
See also
References
Notes
- ^ a b The 1952 Mercedes Benz 300 SL Racing Sport Coupe Archived 20 February 2017 at the Wayback Machine, emercedesbenz.com
- ^ a b c d e f g h Jonny Lieberman (9 January 2013). "Uberbird: The Most Important Postwar Benz of Them All". Motor Trend. ISSN 0027-2094. Archived from the original on 16 October 2013.
- ^ Murphy, Daryl E. (1993). Carrera Panamericana: History of the Mexican Road Race, 1950-54. p. 50. ISBN 9780595483242.
- ^ "Albo d'oro Stella Alpina". scuderiatrentinastorica.it. Archived from the original on 20 October 2014.
Bibliography
- Ackerson, Robert (2013). Return to Glory! : The Mercedes-Benz 300 SL Racing Car. Dorchester, Dorset, UK: Veloce Publishing. ISBN 9781845846176.
- Engelen, Günter (2015). Mercedes-Benz 300 SL Racing Car. Milestones of Motor Sports, Vol. 2. Ostfildern, Germany: Hatje Cantz. ISBN 9783775740036. (in English)
- Ludvigsen, Karl (2002). Mercedes-Benz 300SL: Racing Cars 1952-1953. Ludvigsen Library Series. Hudson, WI, USA: Iconografix. ISBN 1583880674.