Praga D

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The Praga D was a four-cylinder, air-cooled, horizontally opposed aircraft engine first produced in Czechoslovakia in 1936 but which enjoyed its greatest success after World War II due to the explosion in popularity of sports flying. A version for helicopters was produced post WWII as the Praga DH

Applications

Mráz M-2 Skaut

Specifications (Praga D)

General characteristics

Type: four-cylinder, air-cooled, horizontally opposed
Bore: 95mm (3.7 in)
Stroke: 100mm (3.9 in)
Displacement: 2.83 Liters (173 cu in)
Length: 893mm (35 in)
Width: 810mm (32 in)
Height: 546mm (21 in)
Dry weight: 67Kg (148 lb)

Components

Fuel system: Zenith or Stromberg carburetor
Fuel type: 72 octane
Cooling system: air

Performance

Power output: 56 kW (75 hp) at 2,650 rpm
Compression ratio: 6.1:1
Fuel consumption: 235 g/HP hour
Specific fuel consumption: 220 g/HP hour
Oil consumption: 2 - 6 g/HP hour

References

manufacturer's website (defunct site)

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