Avions Voisin C18

The Voisin C18, also called the Voisin Diane, was a passenger car model that Avions Voisin built in France between 1930 and 1935, the first Voisin chassis whose alternative designation did not begin with the letter C. It received its type approval in March 1930 and followed the C19, which had a slightly smaller 3.9 litre engine and of which only three were made. The C18 had a Knight sleeve-valve V12 engine of 4,886 cc, with a 72 mm bore and a 100 mm stroke, rated at 28 CV in France and producing 105 hp, driving the rear wheels through a four-speed gearbox. The wheelbase was 3,580 mm, the length 5,170 mm and the bare chassis weighed 1,750 kg. Voisin sold bare chassis that were fitted with custom bodies, often by outside coachbuilders, and the standard range included the Pullman limousine, the Coupe de Ville and the sedan. Chassis numbers ran from 40001 to 40085 and 89 cars were made in all, 15 of them in 1930. The C20 and C21 of 1931 were variations with the same V12 engine size.