Grace's Guide is the leading source of historical information on industry and manufacturing in Britain. This web publication contains 148,439 pages of information and 233,876 images on early companies, their products and the people who designed and built them.
WWI Engine research. Developed the engine that would eventually be used in the first successful tank design, the British Mark V. A total of over 8,000 of Ricardo's tank engines were put into military service, making it the first British-designed engine to be produced in large numbers. The Mark IX tank and the British version of the Mark VIII (tank) also used a Ricardo engine.