Pierre Bonnet made his own glider that he tested at the Bordeaux-Merignac airfield.

-It was a light biplane, in which he adapted a small auxiliary engine of only 15 to 16 CV.

"Pierre Bonnet, Glider and engine"

-It was an inverted, four-cylinder, two-stroke engine. It was studied, designed and built by himself. Initially it had a displacement of 400 cc with the possibility of changing the cylinders and increasing it up to 500 cc.

-We are dealing with an issue of 1932. There was a 1/2 reduction, which could be freely changed to 1/3 as the engine rotated at 3,200 rpm.

-The Voltex RB magneto ignition was mounted directly on the crankshaft and the carburetor was a Zenith.

-The idle speed was at 400 rpm while producing approximately 25 explosions per second without noticeable vibration, and at high rate it was like a turbine. The engine weight was 29 kg.