A project proposed by Edouard Maillet. It is an X-engine, with a "double connecting rod".

“Maillet, front view”

-It has 16 cylinders in total, and it had the main advantage of suppressing the lateral reactions of the piston on the cylinder wall.

“Maillet, side view”

“Classic connection-rod system”

-The Maillet system, we see in two stages in "B" and "C".

“Maillet's connection-rod system”

-A schematic representation of the "connection" between each piston can be represented as in the following figure.

“Rod-piston connections”

-It consisted of two crossed-over 8-cylinder engines. The engine was air cooled and used the 2-stroke cycle with the intention of complying with the “Coupe Deutsch de la Meurthe” rules.

-With a gearbox the 5,000 rpm of the engine was reduced to 2,140 rpm for the propeller.

-The estimated power was 1,425 hp but the real power was 1,280 hp. The two centrifugal compressors to fill the cylinders already consumed 130 hp.