Le Rhône Type 7A (1910) 50 hp (37 kW) , seven-cylinder rotary engine — twenty built for use on Borel Monoplanes and Sommer Biplanes. Le Rhône Type 7B (1911) 50 hp (37 kW), seven-cylinder rotary engine — Thirty-five prototype engines built. Le Rhône Type 7B2 (1912) 60 hp (45 kW), seven-cylinder rotary engine — 350 built at Societe Moteurs le Rhône.