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Dutheil-Chalmers 2-Cylinder Opposed

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


L. Dutheil and R. Chalmers and Company was an early French designer of aircraft engines in which the cylinders were all arranged horizontally. Two, three, four and six cylinder models were built. All were water cooled with the exception of the model represented by this artifact. This air-cooled engine was built by about 1910.

An engine similar to this type powered Santos-Dumont's Demoiselle aircraft.
Matthew B. Sellers, builder of the first Kentucky-manufactured aircraft, flew his first quadraplane from 1908 to 1913 powered by various 2-cylinder, horizontally-opposed engines. This Dutheil-Chalmers was one of these engines.

Gift of Matthew Bacon Sellers, Jr. and John Sellers.

Manufacturer: Dutheil-Chalmers

Date: 1910

Country of Origin: France

Dimensions: Propeller Dimensions: Diameter 133 cm (52.250 in.), Chord 15 cm (6 in.), Shaft Hole Diameter 39 cm (1.8125 in.), Bolt hole diameter 0.6 cm (0.250 in.), Hub Diameter 10 cm (4.0 in.), Hub Thickness 6 cm (2.25 in.)

Materials: Propeller - Wood Engine Overall - Steel, Aluminum, Brass

Physical Description:Type: Reciprocating, Horizontally-opposed, 2 cylinders, air-cooled Power: 15 kw (20 hp) Displacement: 2.94 L (179 cu in) Bore and Stroke: 125 mm (4.92 in.) x 120 mm (4.72 in.) Weight: Not available

Inventory number: A19690250000

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