Permissible duration for inlet valve opening in car engines by referencing aero cams.
| Identifier | ExFiles\Box 102\5\ scan0064 | |
| Date | 5th June 1931 guessed | |
| (2) We do not know what duration of inlet valve opening is permissible for car work, but hope to find out from these aero cams. Hs {Lord Ernest Hives - Chair} /Rm. {William Robotham - Chief Engineer} | ||
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).