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).
Request to General Motors for details on their setup for observing valve movement.
| Identifier | ExFiles\Box 173\3\ img187 | |
| Date | 7th May 1934 | |
| Exptl. Dept. Hs{Lord Ernest Hives - Chair}/Rm.{William Robotham - Chief Engineer}18/KW. 7th May, 1934. Major Hallett, General Motors Research Laboratory, Detroit, Michigan, U.S.A. Dear Major Hallett, We are in full song with the silent tappets but still badly need a means of observing exactly what our valve gear is doing. I should be very grateful if you could let me have any details of your set up for observing valve movement. Yours sincerely, FOR ROLLS-ROYCE LIMITED. | ||