Grace's Guide is the leading source of historical information on industry and manufacturing in Britain. This web publication contains 137,431 pages of information and 221,356 images on early companies, their products and the people who designed and built them.
Held 23rd September 1909
The Auto-Cycle Union introduced limits on engine capacity instead of the fuel consumption rule that had been in force previously; the single and twin classes were combined. Single-cylinder machines were restricted to 500cc, while twins were limited to 750cc.
500 Single and 750 Twin Results Open Class Race