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Bramo Sh.14A
Siemens-Halske 7 / 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).


The Sh 14 is low pressure due to the engine being completely ball bearings. Cylinders are all of steel barrel with aluminium alloy ribs being cast on by special process, with aluminium alloy heads held down by six studs and are removable.
Intake pots are at the rear and exhaust ports on the side. The crankshaft assembly is composed of two major castings and front and rear cover plates all of aluminium alloy.
The crankshaft is a two piee single throw and all connecting rods are tubular. The master rod is on two ball bearings. The aluminium alloy pistons have two compression ringa and two oil rings in each. Both the exhaust and intake valves are tulip shaped.


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Type: 7 cylinder air cooled radial
Dept Commerce Approved Type Certificate
Military Rating: 113 hp at 1720 rpm
Commercial Rating: 113 hp at 1720 rpm
Displacement: 443
Compression ratio: 5.3
Bore: 4.133 in
Stroke: 4.724 in
Length: 32 in
Diameter: 39 1/4 in
Weight: 308 lb
Fuel consumption: not more than .52 lb/hp/hr
Oil consumption: not more than .027 lb/hp/hr
Lubrication: Dry sump, force feed, low pressure
Ignition: 2 Siemens or Scintilla magnetos
Carburation: 2 Sum or Special Low Sum Carburetor
Spark plugs: 2 per cylinder Siemens
Price: $2100


Sh 14A
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)
Valvetrain: 1 inlet and 1 exhaust valve per cylinder
Fuel type: 80 octane
Cooling system: air
Power output: 160 hp at 2,200 RPM
Compression ratio: 6.0:1



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