Before WWI Hall-Scott of San Francisco and Curtiss of New York were the leading US producers of water-cooled engines.

The first Hall-Scott was produced before 1908. Their stock in trade were 6-cylinder in-lines and V-8s, all water-cooled. E.J. Hall of Hall-Scott was a major contributor to the design of the famous Liberty aero engine.

Specifications: Model A-7a; four-cylinder, in-line, water-cooled; bore 5-1/4 in., stroke 7 in., displacement 606 cu. in., 100-125 hp at 1400 rpm., weight 410 lbs.

Accession no. 1992P06

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