The Sesquiplane first appeared in 1921, a development of the
Nieuport 31 fighter. It was a sleek shoulder-wing braced monoplane powered by a supercharged 8 cylinder
Hispano-Suiza 8Fb engine. having set a new world record speed of 325 kmh (202 mph) over 100 km (62 mi). (sources differ on the identity of the NiD 41) and named
Eugène Gilbert. In February 1923 Lecointe set a new world speed record of 375 kmh (233 mph) at
Istres in it. The last racing Sesquiplan, the
Nieuport-Delage NiD 42 S was a new design, fitted with a 12-cylinder
Hispano 12Hb engine. In June 1924 Lecointe won the Coupe Beaumont in it averaging a speed of over the 300 km course. He did not stop at the end of the course but continued to cover 500 km in total at an average of , a new record for that distance. ==Specifications (
Eugène Gilbert)==