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Hall-Scott A-1 In-line Engine


Display Status:

This object is on display in the Boeing Aviation Hangar room at Steven F. Udvar-Hazy Center in Chantilly, VA.

Hall-Scott A-1 In-line Engine

Collection Item Summary:

Hall-Scott A-1

The Hall-Scott Motor Car Company began specializing in the construction of airplane engines in 1911. The Type A-1, the first one they produced, was soon being used on many types of early aircraft.

At the Third International Aviation Meet in Los Angeles in 1912, a Hall-Scott A-1 powered an aircraft designed by Jay Gage of Los Angeles and flown by Charles Stevens. During the 1912 International Aviation Meet in Oakland, Hillery Beachey, brother of famed aviator Lincoln Beachey, flew a biplane powered by an A-1.

Found in collection

Type:reciprocating, 4 cylinders, in-line, liquid cooled

Power rating:30 kW (40 hp) at 1,500 rpm

Displacement:4.1 L (251 cu in)

Weight:74.9 kg (165 lb)

Manufacturer:Hall-Scott Motor Car Co., San Francisco, Calif.


Collection Item Long Description:

Data Source

National Air and Space Museum


Do not reproduce without permission from the Smithsonian Institution, National Air and Space Museum


Elbert J. Hall

Credit Line

Found In Collection.


  • Aluminum, Steel, Cast Iron
  • Nickel plated- overall


Length 99.1 cm (39.0 in.), Width 44.5 cm (17.5 in.), Height 71.1 cm (28.0 in.)

Country of Origin

United States of America



Physical Description

  • Type: Reciprocating, In-line, 4 cylinders, liquid cooled
  • Power rating: 30 kW (40 hp) at 1,500 rpm
  • Displacement: 4.1 L (251 cu in)
  • Bore and Stroke: 101.6 mm (4 in.) x 127 mm (5 in.)
  • Weight: 74.9 kg (165 lb)


PROPULSION-Reciprocating & Rotary

Inventory Number