NW S

Nesselsdorfer Wagenbau-Fabriks-Gesellschaft
Type S4 (18/24, 16/20)
Type S4 (20/30)

NW Type S
Manufacturer	Nesselsdorfer Wagenbau-Fabriks-Gesellschaft A.G. today Tatra, a.s.
Production	1906 - 1912 S4 (18/24, 16/20) 1913 - 1917 S4 (20/30) 62 produced
Assembly	Kopřivnice, Moravia
Successor	NW T
Body style	diverse four or six seaters
Layout	Front-engine, rear-wheel drive layout
Engine	3,306 cc (201.7 cu in) liquid cooled vertical four cylinder 14,7kW (20HP) S4 (18/24, 16/20) 14,7kW - 22kW (20-30HP) S4 (20/30)
Transmission	four speeds (+reverse)
Wheelbase	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 (18/24, 16/20) 3,100 mm (122.0 in) S4 (20/30)
Curb weight	1,172 kg (2,580 lb) - 1,290 kg (2,800 lb) depending on carrossery [1]

Nesselsdorfer Wagenbau-Fabriks-Gesellschaft
Type S6

Manufacturer	Nesselsdorfer Wagenbau-Fabriks-Gesellschaft A.G. today Tatra, a.s.
Production	1912 - 1915 12 produced
Assembly	Kopřivnice, Moravia
Successor	NW U
Body style	diverse four or six seaters
Layout	Front-engine, rear-wheel drive layout
Engine	4,959 cc (302.6 cu in) liquid cooled vertical six cylinder 29,6kW- 36,8kW (40-50HP)
Transmission	four speeds (+reverse)
Wheelbase	3,450 mm (135.8 in)
Curb weight	1,800 kg (4,000 lb) depending on version [1]
Designer	Hans Ledwinka

The NW type S is a veteran automobile 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 engine was mounted at three points, 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 total production of both models was 74 units.^[1]

References

1. ^ ^{a b c d e} Tatra - Passenger Cars, Karel Rosenkranz, TATRA, a. s., 2007