This paper model is a Renault NC31, based on French light infantry support tank Char D1, created by World of Tanks website. In 1928 Renault succeeded in his attempt to get his Renault NC accepted as the basis for further light infantry tank development; he was granted an order to build two prototypes. The Army called this project the Char D, Renault used the designation NC28. Of the two prototypes, the first was fitted with the twin machine gun turret of the SRA Char de Bataille prototype. Also a new suspension system was tested incorporating the special chenille légère ("light track") designed by Colonel Balland, which was optimised for high speeds. As this vehicle was a derivative of the NC1, it was later indicated with the designation NC2, creating confusion with the earlier project of that name; many later books assumed they were one and the same vehicle. The Army made a choice in March 1929 for the second prototype, the NC3 gun tank, and ordered a pre-series of ten vehicles in December 1929. These had the Renault factory designation NC31, after the intended year of delivery. Renault merely had to build the hulls at a price of 400,000 FF each; the cast turrets were, as usual in France, separately ordered with the Schneider company; they were of the ST1 type (Schneider Tourelle 1). As this turret was much wider than the Renault FT turret used on all previous NC models, Renault broadened the hull accordingly; the typical tapering nose point of the Renault FT was abandoned. The ten hulls were delivered between May and November 1931: after an interval of ten years after the delivery of the last Char 2C in 1921, French tank series production for the home market was thus resumed.
The ten pre-series hulls were tested by the 503e Régiment de Chars de Combat. Many shortcomings were discovered by the Commission de Bourges, the French Infantry matériel commission. Steering was difficult, the suspension too weak and the exhaust pipes overheated the engine compartment. Nevertheless the type was accepted for mass production - the commission had little choice in this as the main series had already been ordered - provided that changes were made. The strangely squeezed ST1 turret, the first ten of which were delivered from November 1930, was rejected though as being unacceptably cramped and unbalanced. To prevent that each time the gun was loaded, the breech had to be lowered into the fighting compartment or otherwise the round could not be shoved in, the main armament had been placed in a very forward position. The ST1 turrets were therefore again removed from the first ten vehicles.
The Char D1 was a pre-World War II French tank. The French plan of 1926, calling for the creation of a Light Infantry Support Tank, led to the development of the existing Renault NC1 prototype into the Char D1. One hundred and sixty vehicles of this type were produced between 1931 and 1935. There was a pre-series of ten vehicles and later 150 standard vehicles were built. Until 1936 the vehicles were fitted with Renault FT turrets because the intended cast ST2 turrets were not ready yet. The ST2 turret was armed with a short 47mm SA34 tank gun with a coaxial 7.5mm MG. The hull carried a 7.5mm MG in the bow. The type did not serve as an infantry support tank as originally intended, but as France's major battle tank of the early thirties; it was quickly phased out in 1937 because of its mechanical unreliability. [Source: HobbyDatabase]
You can download this tank papercraft template here: WWII Renault NC31 Light Infantry Support Tank Free Paper Model Download