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Hall-Scott A-7

Liquid-cooled straight-4 aircraft engine

Field	Value
name	A-7
image	File:Hall-Scott A-7 NASM.jpg
caption	Hall-Scott A-7a at the National Air and Space Museum
engine_type	Piston aero engine
national_origin	United States of America
manufacturer	Hall-Scott Motor Car Company
first_run	1910s

The Hall-Scott A-7 was an early liquid-cooled aircraft engine manufactured by the Hall-Scott company of Berkeley, California. Using a straight-4 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: 5 in, stroke: 7 in, displacement: 549.78 cuin, weight: 410 lb, power: 90 hp at 1,400 rpm, weight: 410 lb
A-7a: The A-7a used the same cylinders as the earlier Hall-Scott A-5a. 100 hp 5.25 x

Applications

Aeromarine 39 (A-7a)
Aeromarine M-1 (A-7a)
Dayton-Wright FS (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.
A Hall-Scott A-7a is on public display at the Aerospace Museum of California.
A Hall-Scott A-7a is in ownership of the National Air and Space Museum.
A Hall-Scott A-7a is on public display at the Museum of Flight.

A Hall-Scott A-7a on display at the Hiller Aviation Museum

A Hall-Scott A-7a aircraft engine on display at the Hiller Aviation Museum ]]

A Hall-Scott A-7a is on public display at the Hiller Aviation Museum.

Specifications (A-7a)

Hall-Scott A-7a at the [[Museum of Flight

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References

Gunston, Bill. (1986). World Encyclopaedia of Aero Engines. Patrick Stephens: Wellingborough. p. 73

References

(1921). "Airplane Engine Encyclopedia". THE OTTERBEIN PRESS.

Info: Wikipedia Source

This article was imported from Wikipedia and is available under the Creative Commons Attribution-ShareAlike 4.0 License. Content has been adapted to SurfDoc format. Original contributors can be found on the article history page.

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