Siemens-Halske Sh 14

The Siemens-Halske Sh 14 was a seven-cylinder air-cooled radial engine for aircraft produced in Germany in the 1920s and 30s. First run in 1928, it was rated at 93 kW (125 hp).

Applications

• Albatros L 82
• Ambrosini SAI.3
• Ambrosini SAI.10
• BFW M.23
• BFW M.29
• BFW M.35
• Bücker Bü 133 Jungmeister
• Flettner Fl 185
• Flettner Fl 265
• Flettner Fl 282
• Focke-Wulf C.20
• Focke-Wulf C.30 Heuschrecke
• Focke-Wulf Fw 44
• Focke-Wulf Fw 61
• Heinkel He 72
• LWD Szpak
• LWD Zuch
• Nuri Demirağ Nu D.38
• RWD-17W
• Rogozarski SIM-VIII
• Rogozarski SIM-XI
• VL Viima

Specifications (Sh 14A)

General characteristics

• Type: seven-cylinder air-cooled radial engine
• Bore: 108mm (4.25 in)
• Stroke: 120mm (4.72 in)
• Displacement: 7.69 L (469.6 cu in)
• Length: 975mm (38.39 in)
• Diameter: 936mm (36.85 in)
• Width: mm (in)
• Height: 936mm (36.85 in)
• Dry weight: 135 kg (297.6 lb)

Components

• Valvetrain: 1 inlet and 1 exhaust valve per cylinder
• Fuel type: 80 octane
• Cooling system: air

Performance

• Power output: 160 hp at 2,200 RPM
• Compression ratio: 6.0:1
• Power-to-weight ratio: 2.32 lb/hp at cruise

References

• Becker, E. Siemens Jahrbuch 1928: Flugzeugmotoren der Siemens & Halske AG, reproduced on bungartz.nl
• http://www.oldengine.org/members/diesel/Duxford/germaer1.htm