NW S

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Nesselsdorf Type S (18/24, 16/20) Type S 4 (20/30) Type S 6 (40/50)
Overview
Manufacturer	Nesselsdorfer Wagenbau-Fabriks-Gesellschaft A.G. today Tatra, a.s.
Production	1906 - 1912 S (18/24, 16/20) 1913 - 1917 S4 (20/30) 62 produced 1912 - 1915 S6 (40/50) 12 produced
Assembly	Kopřivnice, Moravia
Designer	Hans Ledwinka
Body and chassis
Body style	diverse four- or six-seaters
Layout	Front-engine, rear-wheel-drive layout
Powertrain
Engine	3.3 L (3,306 cc) I4 (S/S 4) 5.0 L (4,959 cc) I6 (S 6)
Transmission	four speeds (+reverse)
Dimensions
Wheelbase	S (18/24, 16/20): 2,900 mm (114.2 in) 3,000 mm (118.1 in) 3,100 mm (122.0 in) 3,400 mm (133.9 in) S4 (20/30): 3,100 mm (122.0 in) S 6: 3,450 mm (135.8 in)
Curb weight	1,172 kg (2,584 lb) - 1,290 kg (2,840 lb) (S/S 4, depending on bodywork[1]) 1,800 kg (4,000 lb) (S 6, depending on version[1])
Chronology
Successor	NW T (S 4) NW U (S 6)

The NW type S is a series of large automobiles manufactured by Nesselsdorfer Wagenbau-Fabriks-Gesellschaft A.G. (NW, now known as Tatra).

Hans Ledwinka, who left the company in 1902, was hired back in 1905 (meanwhile he worked for company of Alexander Friedman in Vienna). Immediately he started working on a new car with modern and progressive design. Some of the new features included overhead valves, actuated by overhead camshaft (OHC), and hemispherical combustion chamber. The water-cooled engine was mounted at three points and the engine block had large service access doors. The engine with the gearbox formed one massive unit, so-called monoblock.^[1]

The gearbox itself was of a bell shape with only five gears. Two gears were ring type with teeth on the inside surface. Individual speeds were engaged by moving the gears radially. The rear axle was driven by a drive shaft in lieu of chains.^[1]

The S 4 and S 6 with four-cylinder or six-cylinder engines were able to reach maximum speeds of 80 km/h and 100 km/h (50/62 mph). The S 18/24 and 16/20 models developed 20 PS (14.7 kW), while the S4 20/30 offered 30 PS (22.1 kW). The later, six-cylinder S 6 40/50 version was an S4 with two cylinders added; it produced 50 PS (36.8 kW) and was introduced in 1910. The total production of both models was 74 units.^[1]

References[]

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