Hirth HM 506 was a six-cylinder air-cooled inverted inline engine that was developed from the earlier four-cylinder HM 504. The HM 506 was a popular engine for light aircraft of the 1930s to 1940s and powered the [1 ] Bücker Bü 133A model trainer. The engine featured a cast magnesium alloy crankcase.
Applications [ edit ]
Specifications (HM 506) [ edit ]
Grey 1972, p. 60d-61d
Type: 6-cylinder air-cooled inverted inline
Bore: 105 mm (4.13 in)
Stroke: 115 mm (4.53 in)
Displacement: 5.976 L (364.7 cu in)
Length: 1,276 mm (49.8 in)
Width: 490 mm (19.1 in)
Height: 735 mm (28.66 in)
Dry weight: 149 kg (328 lbs)
1 inlet and 1 exhaust valve per cylinder, operated by push-rods and rockers Valvetrain:
Fuel system: 2 Sum down draught carburetters, automatic mixture control and suitable for inverted flight. Twin Bosch magnetos.
Oil system: Fresh oil, metered for each cylinder. Rockers in oil bath.
Cooling system: air
References [ edit ]
^ a b Gunston 1989, p.77.
Bibliography [ edit ]
Grey, C.G. (1972). Jane's All the World's Aircraft 1938. London: David & Charles. ISBN 0-7153-5734-4. Gunston, Bill.
World Encyclopaedia of Aero Engines. Cambridge, England. Patrick Stephens Limited, 1989. ISBN 1-85260-163-9
External links [ edit ]