11/30/2009. Remarks by Walter van Tilborg: "The Saphir was another design of Claude Piel and intended as possible successor for the C.P.30 Émeraude it was essentially a new design with a different, trapezoidal wing planform, a wooden fuselage and wood wing skinning and also with provision for a retractable undercarriage. The Saphir was aerobatic when flown as 2-seater and examples were completed with tricycle or tail wheel gear.
Designated C.P.1320, the basic model, was suited for engines in the 100-160 hp range, and the first was completed in France by Jacques and Jean-Claude Lascoutounas of Blanquefort, near Bordeaux. First flown on October 31, 1979 and registered F-PYIE, this aircraft had one 160 hp Lycoming O-320-C2A engine and a fixed tricycle undercarriage. Twofurther aircraft, also built in France, featured a retractable gear. The prototype was later used as test bed for an LPG tank installation.
The C.P.1320D was one modified aircraft built in France with a fixed tricycle type undercarriage and first flew in October 1985, powered by one 150/160 hp Lycoming O-320. The C.P.1321 was very similar to the C.P.1320, but with one 145hp Continental O-300 engine, while the C.P.1321B was a C.P.1321 with modifications.