The '''Armstrong Siddeley Lynx''' is a seven cylinder [[Aircraft engine|aero-engine]] developed by [[Armstrong Siddeley]]. Testing began in 1920 and 6,000 had been produced by 1939. In Italy [[Alfa Romeo]] built a {{convert|200|hp|kW}} licensed version of this engine named the Alfa Romeo Lynx.<ref name="aroca-qld.com">{{Cite web|url=http://www.aroca-qld.com/library_articles/alfa_romeo_aero_engines.php|title=Alfa Aero Engines|accessdate=2007-08-25|work=aroca-qld.com}}</ref>
The '''Armstrong Siddeley Lynx''' is a British seven-cylinder [[Aircraft engine|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 {{convert|200|hp|kW}} licensed version of this engine named the Alfa Romeo Lynx.<ref name="aroca-qld.com">{{Cite web|url=http://www.aroca-qld.com/library_articles/alfa_romeo_aero_engines.php |title=Alfa Aero Engines |access-date=2007-08-25 |work=aroca-qld.com |url-status=dead |archive-url=https://web.archive.org/web/20071008150746/http://www.aroca-qld.com/library_articles/alfa_romeo_aero_engines.php |archive-date=2007-10-08 }}</ref>
==Variants==
==Variants==
;Lynx I
;Lynx I
:1920, 150hp.
:1920, {{cvt|150|hp}}.
;Lynx II
;Lynx II
:1920, 184hp.
:1920, {{cvt|184|hp}}.
;Lynx III
;Lynx III
:1924, 200hp.
:1924, {{cvt|200|hp}}.
;Lynx IV
;Lynx IV
:1929, 180hp.
:1929, {{cvt|180|hp}}.
;Lynx IVA
;Lynx IVA
:1930, 188hp.
:1930, {{cvt|188|hp}}.
;Lynx IVB
:1930, {{cvt|215|hp}}.
;Lynx IVC
;Lynx IVC
:1929, 208/225hp.
:1929, {{cvt|208|/|225|hp}}.
;Lynx IV(G)
;Lynx IV(G)
:1929, Geared propellor drive.
:1929, Geared propeller drive.
;Lynx IV(MOD)
;Lynx IV(MOD)
:1929, 188hp, reconditioned and modified Lynx IV.
:1929, {{cvt|188|hp}}, reconditioned and modified Lynx IV.
:1930, increased bore and stroke, name changed from Lynx V to Lynx Major then Cheetah. Half a [[Armstrong Siddeley Panther|Panther]]<ref>Lumsden 2003, p.74.</ref>
{{main|Armstrong Siddeley Cheetah}}
:1930, increased bore and stroke, name changed from Lynx V to Lynx Major then Cheetah. Effectively half a [[Armstrong Siddeley Panther|Panther]]<ref>Lumsden 2003, p.74.</ref>
;Piaggio P.II: Licence production in Italy by [[Piaggio]].
*Avro Tutor, ''K3215'', powered by a Lynx IV flies regularly at the [[Shuttleworth Collection]] and can be viewed in the museum at other times.<ref>[http://www.shuttleworth.org/shuttleworth_aircraft_details.asp?ID=25 The Shuttleworth Collection - Avro Tutor] Retrieved: 11 February 2009</ref>
*[[File:ArmstrongSiddeley Lynx fitted to the Shuttleworth Collection's airworthy AvroTutor.jpg|alt=Shows Another view of the Armstrong Siddeley Lynx radial engine fitted to the Shuttleworth Collection's airworthy Avro Tutor interwar biplane |thumb|Another view of the Armstrong Siddeley Lynx fitted to the Shuttleworth Collection's airworthy Avro Tutor]]Avro Tutor, ''K3215'', powered by a Lynx IV, flies regularly at the [[Shuttleworth Collection]] and can be viewed in the museum at other times.<ref>[http://www.shuttleworth.org/shuttleworth_aircraft_details.asp?ID=25 The Shuttleworth Collection - Avro Tutor] {{Webarchive|url=https://web.archive.org/web/20100212114446/http://www.shuttleworth.org/shuttleworth_aircraft_details.asp?ID=25 |date=12 February 2010 }} Retrieved: 11 February 2009</ref>
==Specifications (Lynx IV)==
==Specifications (Lynx IV)==
[[Image:AS Cooma A S Lynx radial.jpg|thumb|right|Armstrong Siddeley Lynx 7-[[cylinder (engine)|cylinder]] radial from the [[Avro 618 Ten]] aircraft, ''Southern Cloud'']]
[[File:AS Cooma A S Lynx radial.jpg|thumb|right|Armstrong Siddeley Lynx 7-[[cylinder (engine)|cylinder]] radial from the [[Avro 618 Ten]] aircraft, ''[[Southern Cloud]]'']]
{{pistonspecs
{{pistonspecs
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|ref=<ref>Lumsden 2003, p.66-67.</ref>
|ref=''Lumsden''<ref>Lumsden 2003, p.66-67.</ref>
|type=7-cylinder air-cooled radial engine
|type=7-cylinder air-cooled radial engine
|bore=5.0 in (127 mm )
|bore=5.0 in (127 mm )
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|similar engines=
|similar engines=
*[[Jacobs R-755]]
*[[Siemens-Halske Sh 14]]
*[[Walter Castor]]
*[[Warner Scarab]]
*[[Wright R-760]]
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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.[1]
Another view of the Armstrong Siddeley Lynx fitted to the Shuttleworth Collection's airworthy Avro TutorAvro Tutor, K3215, powered by a Lynx IV, flies regularly at the Shuttleworth Collection and can be viewed in the museum at other times.[3]
