1921 - 1925
The Stack started life as a cyclecar with a 766cc V-twin engine, friction transmission and chain final drive. For 1923 a bored out engine increased capacity to 858cc, and the price dropped from £198 to £137, but the car struggled in an overcrowded market, although it was perttier than many, with black wings and a lavender-fawn coloured body. In 1925 they went over to a conventional 1526cc 4-cylinder engine, 3-speed gearbox and shaft drive, but production ceased at the end of the year. About 60 Stacks were made.
Source: Nick Georgano / The Beaulieu Encyclopaedia of the Automobile