Armstrong Siddeley Lynx
aircraft engine family by Armstrong Siddeley

The Armstrong Siddeley Lynx is a British seven-cylinder aero engine developed by Armstrong Siddeley. It was developed as a single row version of the two-row Armstrong Siddeley Jaguar. Testing began in 1920 and 6,000 had been produced by 1939. In Italy Alfa Romeo built a 200 horsepower (150 kW) licensed version of this engine named the Alfa Romeo Lynx.
Variants
Lynx I
1920, 150 hp (110 kW).
Lynx II
1920, 184 hp (137 kW).
Lynx III
1924, 200 hp (150 kW).
Lynx IV
1929, 180 hp (130 kW).
Lynx IVA
1930, 188 hp (140 kW).
Lynx IVB
1930, 215 hp (160 kW).
“Armstrong Siddeley Lynx” enters the record as aircraft engine family by Armstrong Siddeley. Crown Archives preserves that source wording while asking what Armstrong, Siddeley and Lynx can confirm, complicate or overturn.
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Named sources, stable identifiers and responsible institutions provide the strongest route from overview to verifiable evidence. The source revision retrieved here is dated Apr 14, 2026. The linked authority identifier is Q689344. None of the 0 selected statements returned an explicit reference. The first chronological checks are 1920, 1939, 1924 and 1929.
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