Aeroengine production at DMG

Production of the first 120 hp / 88 kW four-cylinder J 4 F power unit marks the beginning of aeroengine construction at DMG. The 30 hp / 22 kW B 4 F duly follows one month later, with the first 60 hp / 44 kW four-cylinder D 4 F variant – which remains in production until 1912 – completed in September.