From the Rolls-Royce experimental archive: a quarter of a million communications from Rolls-Royce, 1906 to 1960's. Documents from the Sir Henry Royce Memorial Foundation (SHRMF).
Blueprint showing a cross-section of a high power head with an inclined sparking plug.
Identifier | ExFiles\Box 133\1\ scan0096 | |
Date | 6th August 1927 guessed | |
HIGH POWER HEAD 20° INCLINED COMBUSTION CHAMBER SPARKING PLUG DIMENSIONS AS PER E.B. 1989. SCT 40 | ||