The Hall-Scott A-7 was an early liquid-cooled aircraft engine manufactured by the
Hall-Scott
Hall-Scott Motor Car Company was an American manufacturing company based in Berkeley, California. It was among the most significant builders of water-cooled aircraft engines before World War I.
History
1910–21
The company was founded in 1910 ...
company of
Berkeley, California
Berkeley ( ) is a city on the eastern shore of San Francisco Bay in northern Alameda County, California, United States. It is named after the 18th-century Anglo-Irish bishop and philosopher George Berkeley. It borders the cities of Oakland, Cali ...
. Using a
straight-4
A straight-four engine (also referred to as an inline-four engine) is a four-cylinder piston engine where cylinders are arranged in a line along a common crankshaft.
The majority of automotive four-cylinder engines use a straight-four layout ( ...
configuration, the engine developed 90 horsepower (67 kW) as the A-7 and 100 horsepower (75 kW) as the A-7a. In service these engines suffered from reliability problems and were prone to catch fire while in operation.
Variants
* A-7: The A-7 used the same cylinders as the earlier Hall-Scott A-5. Bore: , stroke: , displacement: , weight: , power: at 1,400 rpm, weight:
* A-7a: The A-7a used the same cylinders as the earlier Hall-Scott A-5a.
[
]
Applications
* Aeromarine 39
The Aeromarine 39 was an American two-seat training seaplane ordered by the US Navy in 1917 in aviation, 1917 and built by the Aeromarine, Aeromarine Plane and Motor Company of Keyport, New Jersey. Of conventional biplane configuration and constr ...
(A-7a)
* Aeromarine M-1
The Aeromarine M-1 was a two-seat training biplane ordered by the US Army's Aviation Section, U.S. Signal Corps (USAAS) in 1917 and built by the Aeromarine Plane and Motor Company of Keyport, New Jersey.
Design and development
Originally know ...
(A-7a)
* Dayton-Wright FS
The Dayton-Wright FS was a two-seat trainer that first flew in 1917. This was the first aircraft manufactured by the Dayton-Wright Company. The FS was originally known as the 'first shot' since it was the company's 'first shot' at making an ...
(A-7a)
* Standard J-1
In 2017 about seven A-7a engines were still in use in Edwardian racing cars, mostly in the United Kingdom.
Engines on display
* A Hall-Scott A-7a is on public display at the Canada Aviation and Space Museum
The Canada Aviation and Space Museum () (formerly the Canada Aviation Museum (''Musée de l'aviation du Canada'') and National Aeronautical Collection (''Collection aéronautique nationale'')) is Canada's national aviation history museum. The m ...
.
* A Hall-Scott A-7a is on public display at the Aerospace Museum of California
The Aerospace Museum of California is a private non-profit aviation museum located in McClellan, California, outside of Sacramento, California, on the grounds of the former McClellan Air Force Base.
History
Founded as the Air Force Logistics Mus ...
.
* A Hall-Scott A-7a is in ownership of the National Air and Space Museum
The National Air and Space Museum (NASM) of the Smithsonian Institution is a museum in Washington, D.C., in the United States, dedicated to history of aviation, human flight and space exploration.
Established in 1946 as the National Air Museum, ...
.
* A Hall-Scott A-7a is on public display at the Museum of Flight
The Museum of Flight is a private Nonprofit organization, non-profit Aircraft, air and Spacecraft, space museum in the Seattle metropolitan area. It is located at the southern end of Boeing Field, King County International Airport (Boeing Fi ...
.
* A Hall-Scott A-7a is on public display at the Hiller Aviation Museum
The Hiller Aviation Museum is an aviation museum located at the San Carlos Airport in San Carlos, California, focused on Northern California aviation history, Hiller Aircraft and helicopter history.
History Background
As early as the late 1960 ...
.
Specifications (A-7a)
See also
References
* Gunston, Bill. (1986). ''World Encyclopaedia of Aero Engines''. Patrick Stephens: Wellingborough. p. 73
External links
Photo of an A-7 at passion-aviation.qc.ca
{{Aeroengine-specs
1910s aircraft piston engines