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Walter NZ 120



The Walter NZ 120 was a nine-cylinder, air-cooled, radial engine for aircraft use built in Czechoslovakia by Walter Aircraft Engines in the 1920s. Using common cylinders and parts from the NZ (Novák-Zeithammer) range of engines the NZ 120 produced up to 135 horsepower (99 kW).


Walter 120 engine


Avia B.122
Breda Ba.26
Fizir FN
Junkers K 16
Letov Š-218
Praga BH-39NZ


Type: Nine-cylinder radial piston engine
Bore: 105 mm (4.1 in)
Stroke: 120 mm (4.7 in)
Displacement: 9.36 L (571.2 cu in)
Dry weight: 148 kg (326 lb)
Valvetrain: Overhead valve, two poppet valves per cylinder
Cooling system: Air-cooled
Reduction gear: Direct drive
Power output: 99.3 kW (135 hp) at 1,750 rpm (take-off power)
Compression ratio: 4.48:1







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