Grace's Guide is the leading source of historical information on industry and manufacturing in Britain. This web publication contains 133,755 pages of information and 211,898 images on early companies, their products and the people who designed and built them.
Symplex of Alma Street, Birmingham
Symplex was a motorcycle produced between 1914 and 1915
1914 Designed by J. J. Allen, the name first appeared in December 1914, on a machine that was probably intended to offer basic transport during the early days of World War I. The engine was a 318cc Dalm two-stroke and the model had two speeds or direct belt drive and Brampton Biflex forks. Like so many other makes of the era, it was very short lived.