SIMGER stands for the construction company “Societá Italiana Motori Gnome e Rhone”. It was created in Turin around the First World War.

-This is the French subsidiary of Gnome et Rhone. It manufactured the 9C and 9J rotary models in Italy.

-The 9C gave 80 HP with 11.65 l. of total displacement. The 7-cylinder Lambda also delivered 80 HP.

“Simger 9J”

-Unlike most rotaries, with single-valve systems or “Monosoupapes”, the 9J had two valves in the cylinder head, slightly inclined with respect to the cylinder axis and individually controlled by a rod and rocker arm.

“Simger 9J cross-section”

"Simger, Lambda de 80 CV"

-Identical to the original Gnome, the exhaust was controlled by a rod that opened a valve in the cylinder head. Intake was done through an automatic valve in the piston head.

From Appendix 9: The SIMGER 9J engine manufactured by the Italian subsidiary of Gnome-Le Rhone, Vigna di Valle could be misleading.

-It is the so-called “Societá Italiana di Motori Gnome Et Rhone”, that is, SIMGER.

“Simger 9J”

“Simger 9J front plate extended image”

-The plate says: “Societa Motori Gnome Et Rhone” which could be translated into “SMGER” instead of SIMGER. “Italian” is missing.