Diatto 20 A
Car : Diatto 20 A
Year : 1927
Engine :4 cylinders in line
Bore and stroke :80?100 mm
Cylinder capacity : 1996 cc
Gears : 4 forward
Brake horse power : 40
Maximum speed : -
Wheelbase :10 ft 2 ins (3.09 m)
Suspension : front and rear: semi-elliptic leaf- springs
Diatto began in 1835 as Turin coach builders. In 1905 Vittorio and Pietro Diatto made an agreement with the French firm of Clement-Bayard to create an automobile business. A 1884 cc twin-cylinder car and a 3770 cc 4-cylinder car already being produced by Clement-Bayard were chosen. In 1909 Adolphe Clement , who had been chairman of the firm Diatto-A. Clement Vetture Marca Torino, with-drew , leaving the two brothers in full control of Diatto. The company changed its name to Officine Fonderie Frejus Diatto and in 1909 put the first 4-cylinder monobloc into production. In 1915 a body building shop was added to the factory.
Diatto 20 A
The Diatto 20 dates from 1922. It did not originate in the firm but was the work of Veltro of Turin who handed the design over to Diatto. The overhead valves and camshaft classed the 20 as a modern car. The engine of the 20 S developed 75 bhp as opposed to the 40 bhp of the 20 A. In 1923 the company was placed in liquidation and it changed its name once again to Autocostruzioni Diatto S.A. A Grand Prix car also featured again in its program. This was commissioned from Alfieri Maserati and he produced a 2000 cc 8-cylinder vehicle which made its first appearance at the 1925 Italian Grand Prix. Nothing came of this project.