Sunbeam Spartan
{{Short description|1910s British piston aircraft engine}}
{{Use dmy dates|date=November 2017}}
{{Use British English|date=November 2017}}
| {{Infobox aircraft begin
|name=Spartan |image= |caption= }}{{Infobox aircraft engine |type =V-12 air-cooled piston engine |national origin =Britain |manufacturer =Sunbeam{{cite book|last=Brew|first=Alec|title=Sunbeam Aero-engines|publisher=Airlife Publishing|location=Shrewsbury|date=1998|isbn=1-84037-023-8}} |designer =Louis Coatalen |first run = |major applications =Saunders T.1 |number built = prototypes only |program cost = |unit cost = |developed from = |variants with their own articles = }} |
The Sunbeam Spartan was a British 12-cylinder aero-engine designed and built in 1916.
Design and development
Louis Coatalen concentrated on water-cooled engines for the most part, but did design an air-cooled V-12 named Spartan. Little is known of this engine which had a bore of {{convert|105|mm|in|0|abbr=on}} and stroke of {{convert|130|mm|in|0|abbr=on}}, capacity of {{convert|14.03|L|cuin|0|abbr=on}} and output of {{convert|149|kW|hp|0|abbr=on}} driving a propeller through a reduction gearbox. The single overhead camshaft operated two inlet and two exhaust valves per cylinder via rockers, and ignition was supplied by two 6-cyl. magnetos supplying spark to one spark plug per cylinder.
Specifications (Spartan)
{{pistonspecs|
|type=V-12 air-cooled piston engine
|bore={{convert|105|mm|in|0|abbr=on}}
|stroke={{convert|130|mm|in|0|abbr=on}}
|displacement={{convert|14.03|L|cuin|0|abbr=on}}
|length=
|diameter=
|width=
|height=
|weight=
|valvetrain=Single overhead camshaft, two exhaust and two inlet valves per cylinder
|supercharger=
|turbocharger=
|fuelsystem=gravity fed
|fueltype=Gasoline
|oilsystem=Dry sump, pressure fed
|coolingsystem=Air-cooled
|power={{convert|149|kW|hp|0|abbr=on}}
|specpower=
|compression=
|fuelcon=
|specfuelcon=
|oilcon=
|power/weight=
|designer=Louis Coatalen
|reduction_gear=ratio not known
|general_other=
|components_other=
|performance_other=
}}
See also
{{aircontent
|see also=
|related=
|similar aircraft=
|lists=
|similar engines=
}}
References
{{reflist}}
=Bibliography=
- {{cite book |title=The Illustrated Encyclopedia of Aircraft |publisher=Aerospace Publishing|location=London }}
- Lumsden, Alec. British Piston Engines and their Aircraft. Marlborough, Wiltshire: Airlife Publishing, 2003. {{ISBN|1-85310-294-6}}.
- {{cite book|last=Brew|first=Alec|title=Sunbeam Aero-engines|publisher=Airlife Publishing|location=Shrewsbury|date=1998|isbn=1-84037-023-8}}
External links
- [https://web.archive.org/web/20080601085540/http://www.localhistory.scit.wlv.ac.uk/Museum/Transport/planes/SunbeamEngines9.htm ]
{{Sunbeam aeroengines}}