lauantai 1. syyskuuta 2012

Mercedes-Benz SSK Sport

Mercedes-Benz SSK Sport II 1931
  The Mercedes-Benz SSK is a roadster built by German automobile manufacturer Mercedes-Benz between 1928 and 1932. Its name is an abbreviation of Super Sport Kurz, German for "Super Sport Short", as it was a short wheelbase development of the earlier Mercedes-Benz S. The SSK's extreme performance and numerous competitive successes made it one of the most highly regarded sports cars of its era.


Overall, Mercedes-Benz built 146 units of these intriguing S sports cars with the designation 26/120/180 hp – as two-seater racing cars, open tourers and comfortable convertibles. However, as early as 1928 the 27/140/200 hp SS, internally known as W 06, was launched. With a compression ratio raised from 1:4.7 to 1:5.2, the engine, equally fitted with double (magneto and battery) ignition, generated 20 hp (15 kW) more than the first version. Between 1928 and 1930, 111 buyers raised the 35,000 Reichsmark charged for an SS model.

Mercedes-Benz SSK Sport II 1931
The SSK was the last car designed for Mercedes-Benz by the engineer Ferdinand Porsche before he left to found his own company. The SSK was based on the earlier Mercedes-Benz S, but with the chassis shortened by 19 inches (480 mm) to make the car lighter and more agile for racing,[5] especially short races and hillclimbs.


With model designations Mercedes-Benz S, SS, SSK and SSKL, the supercharged models built from 1927 went down in history. There are hardly any other passenger car series in automotive history which have accumulated as many superlatives as the S models from Stuttgart. No other contemporary road-going vehicle was capable of such high speeds while at the same time being as robust, reliable and long-lived. And no other car exudes as much timeless fascination as the large supercharged six-cylinder models from Mercedes-Benz – decades after they went out of production. With these cars, Ferdinand Porsche set himself an impressive designer’s monument.



Mercedes-Benz SSK Sport II 1931
Fitted with a supercharged single overhead camshaft 7-litre straight-6 engine producing 200–300 metric horsepower (150–220 kW) and over 500 lb·ft (680 N·m) of torque (depending on the state of tune), the SSK had a top speed of up to 120 miles per hour (190 km/h), making it the fastest car of its day. The supercharger on the SSK's engine was operated by a clutch that was engaged by fully depressing the throttle pedal and then giving the pedal an extra push. Backing off the throttle pedal disengaged the supercharger clutch.



Based on the 630 K and the further developed version, with a vertical-shaft six-cylinder, displacement enlarged to 6.8 liters and lowered chassis, the S surpassed its predecessor in every respect. Without the supercharger engaged, an early version of its engine with overhead valves transferred as much as 120 hp (88 kW) to the rear wheels. And when the accelerator was pressed down beyond the full-throttle point, the Roots blower driven by bevel gears was engaged, causing the multi-plate clutch to transmit a mighty 180 hp (132 kW).

Mercedes-Benz SSK Sport II 1931

The SSK was driven to victory in numerous races, including in 1929 the 500 Miles of Argentina, the 1929 and 1930 Cordoba Grands Prix, the 1931 Argentine Grand Prix, and, in the hands of legendary Grand Prix racing driver Rudolf Caracciola, the 1929 British Tourist Trophy race, the 1930 Irish Grand Prix, the 1931 German Grand Prix, and the 1931 Mille Miglia.
Mercedes-Benz SSK Sport II 1931

The S/SS/SSK line was one of the nominees in the penultimate round of voting for the Car of the Century award in 1999, as chosen by a panel of 132 motoring journalists and a public internet vote.


Mercedes-Benz SSK Sport II 1931
This power-pack was surpassed only by the Mercedes-Benz SSKL (W 06 RS) – a thoroughbred sports car with a mighty 300 hp (221 kW). Thanks to numerous weight-shedding measures, the car was some 200 kilograms lighter than the SSK which weighed in at 1.7 tons.
Mercedes-Benz SSK Sport II 1931
While the single S stood for ‘Sport’, the double SS denoted ‘Super – Sport’. Compared with the S model, which was already blessed with a host of superlatives, the SS caused the degree of fascination to skyrocket. A displacement enlarged to 7.1 liters, light-alloy pistons, a larger valve diameter and output ratings of 200, 225 and 250 hp (147, 165 and 184 kW) fully justified the epithet ‘Super’.

Mercedes-Benz SSK Sport II 1931

Specs of MERCEDES-BENZ SSK 27/170/225, manufactured or sold in 1931, version for Europe with 2-door roadster body type, RWD (rear-wheel drive) and manual 4-speed gearbox. Basic www.automobile-catalog.com specs and characteristics: petrol (gasoline) engine of 7069 cm3 / 432.3 cui displacement with advertised power 165.5 kW / 222 hp / 225 PS ( DIN ) / 3300 and 520 Nm / 383 lb-ft / 1900 of torque. Dimensions: this model outside length is 4250 mm / 167.3 in, it’s 1700 mm / 66.9 in wide and has wheelbase of 2950 mm / 116.1 in. The value of a drag coefficient, estimated by a-c, is Cd = 0.7 .



This was the absolute dream car in its day and age. However, contemporary sports car drivers would have quoted an even more attractive proposition, namely the SSK with a chassis that was 45 centimeters shorter than that of the SS. With the supercharger engaged, the 7.1-liter engine generated up to 250 hp (184 kW).

Mercedes-Benz SSK Sport II 1931
Reference vehicle weights are: official base curb weight 1700 kg / 3748 lbs, gross weight GVWR 2000 kg / 4409 lbs. How fast is that car ? Performance: top speed 192 km/h (119 mph) (declared by factory); accelerations 0- 60 mph 9.6 s; 0- 100 km/h 10.1 s (a-c simulation); 1/4 mile drag time (402 m) 17.3 s (a-c simulation). Fuel consumption and mileage: official: , average estimated by a-c: 26.7 l/100km / 10.6 mpg (imp.) / 8.8 mpg (U.S.) / 3.8 km/l, average estimated combined driving range of this car is 451 km / 280 miles.




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