The bulk of these engines were made in France. After they had success producing liquid cooled radialengines between 1908 to 1918, the company changed their focus to air-cooled to reduce weight and increase power per unit of weight. The majority of engines produced by Salmson were radial. The air-cooled engines featured an unorthodox Canton-Unne internal arrangement that did away with a master rod in favor of a cage of epicyclic gears driving the crankpin.
Due to the fact that the relatively low power was divided among several cylinders, the running of the engine was particularly smooth, and the torque produced was very even. The use of the Canton-Unne system of planetary gears also added to the smooth running of the engine.
In 1951 production ended and the company was liquidated.