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).
Engine induction pipe pressure and its effect on a rattling coupling.
| Identifier | ExFiles\Box 5\5\ 05-page06 | |
| Date | 28th November 1911 guessed | |
| (2) of the engine when air is admitted to the induction pipe and when the induction pipe has in it a considerable vacuum, i.e. the pressure considerably below the atmosphere. This would make a great difference in the tendency to rattle in the coupling. P.H.R. | ||