Hirth HM 60
| HM 60 | |
|---|---|
 | |
| Type | Inline piston engine |
| Manufacturer | Hirth |
| First run | June 1923 |
| Major applications | Klemm Kl 25 |
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The Hirth HM 60 was a four-cylinder inverted air-cooled inline aircraft engine designed in 1923 and first sold in 1924. The engine was of very high quality, and its sales success contributed to Hirth's rapid pre-war expansion. It was a popular engine for light aircraft delivering 80 hp (60 kW) at 2,300 rpm. Later Hirth engines built upon the HM 60's success and provided greater power with many of the same design features.[1]
Variants
- HM60
- HM60R
- HM60R2
Applications
Specifications (HM 60R2)
General characteristics
- Type: 4-cylinder air-cooled inverted inline engine.
- Bore: 102 mm (4 in)
- Stroke: 110 mm (4.33 in)
- Displacement: 3.6 L (220 cu in)
- Length: 856 mm (33.7 in)
- Width: 391 mm (15.4 in)
- Height: 688 mm (27.1 in)
- Dry weight: 97 kg (214 lb)
Components
- Valvetrain: 1 inlet and 1 exhaust valve per cylinder.
- Fuel system: Carburetor
- Fuel type: 74 octane
- Cooling system: Air-cooled
Performance
- Power output: 80 hp (60 kW) at 2,400 rpm
- Compression ratio: 5.8:1
- Power-to-weight ratio: 507 W/kg (0.3 hp/lb) at cruise speed
See also
- Comparable engines
- Related lists
References
Notes
- ↑ Gunston 1989, p.77.
Bibliography
- Gunston, Bill. World Encyclopaedia of Aero Engines. Cambridge, England. Patrick Stephens Limited, 1989. ISBN 1-85260-163-9
External links
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