Armstrong Siddeley Lynx

Variants

Lynx I

1920, 150 hp.

Lynx II

1920, 184 hp.

Lynx III

1924, 200 hp.

Lynx IV

1929, 180 hp.

Lynx IVA

1930, 188 hp.

Lynx IVC

1929, 208/225 hp.

Lynx IV(G)

1929, Geared propellor drive.

Lynx IV(MOD)

1929, 188 hp, reconditioned and modified Lynx IV.

Lynx IV(S)

1928, 200 hp, Fully supercharged.

Lynx V (Lynx Major)

1930, increased bore and stroke, name changed from Lynx V to Lynx Major then Cheetah. Effectively half a Panther

Piaggio P.II

Licence production in Italy by Piaggio.

Alfa Romeo Lynx

Breda Ba.19

Breda Ba.25

IMAM Ro.10

Survivors

Avro Tutor, K3215, powered by a Lynx IV, flies regularly at the Shuttleworth Collection and can be viewed in the museum at other times.

Specifications (Lynx IV)

Data from Lumsden

General characteristics

Type: 7-cylinder air-cooled radial engine

Bore: 5.0 in (127 mm )

Stroke: 5.5 in (140 mm)

Displacement: 756 cu in (12.4 L)

Length: 45.6 in (1,158 mm)

Diameter: 42 in (1,067 mm)

Dry weight: 525 lb (238 kg )

Components

Valvetrain: Overhead valve, 2 valves per cylinder

Fuel system: Carburettor

Cooling system: Air-cooled

Performance

Power output: 187 hp (139 kW) at 1,700 rpm cruise / 215 hp (160 kW) at 1,900 rpm max

Power-to-weight ratio: 0.35 hp/lb (0.6 kW/kg)