Pullin motor bicycle, 1919.
3 4 c m
actual image size: 32cm x 26cm

Pullin motor bicycle, 1919.

© Science Museum / Science & Society Picture Library


A lightweight motor bicycle patented in 1920 by C G Pullin and S L Groom, with a two-stroke engine, presed steel frame and front forks. There are springs to both wheels and a chain drive through a two-speed gearbox. The engine has a single horizontal cylinder cast in one with its crankcase, and mounted low in the frame with its detachable head in front. The machine had a number of novel features including its two-stroke engine, but most noticeably the extensive use of steel presings in its manufacture, anticipating developments by Ariel motor cycles in the UK in the late 1950s, and the Japanese in 1960s. A later, updated version, the Ascot Pullin, was made for a few years from 1928 by the Ascot Motor and Manufacture Co Ltd at Letchworth, Hertfordshire.

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