Grace's Guide is the leading source of historical information on industry and manufacturing in Britain. This web publication contains 148,487 pages of information and 233,925 images on early companies, their products and the people who designed and built them.
Derby were motorcycles produced in 1901 and 1902 and handled by Edward De Poorter and Co of Great Tower Street, London.
The machine was primitive and had an imported 1hp aiv engine mounted in a heavy-duty bicycle frame. It differed from most others in that the motor sat inclined above the downtube, and drove a countershaft by chain. This was fitted behind the seat tube from where it drove the rear wheel by belt. The batteries and ignition hung behind the saddle. Later they fitted an MMC engine and also supplied engines to other firms.
The British Motorcycle Directory - Over 1,100 Marques from 1888 - by Roy Bacon and Ken Hallworth. Pub: The Crowood Press 2004 ISBN 1 86126 674 X