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).
Support for the air silencer on the PH.III four-port head engine.
| Identifier | ExFiles\Box 152\3\ scan0193 | |
| Date | 19th May 1937 | |
| To Rm. {William Robotham - Chief Engineer} Copy to Da. {Bernard Day - Chassis Design} (Struck through) By. {R.W. Bailey - Chief Engineer} (Struck through) HPS. {Horace Percy Smith - Experimental Factory Mgr} (Struck through) Rm {William Robotham - Chief Engineer} /Wym. {G. Harold Whyman - Experimental Manager} (Struck through) 1297 E {Mr Elliott - Chief Engineer} /PSN.1/M.19.5.37. AIR SILENCER SUPPORT. PH.III - FOUR PORT HEAD. In reply to your memo. Rm {William Robotham - Chief Engineer} /Wym. {G. Harold Whyman - Experimental Manager} 16/JH.14.5.37, the request for deletion of the bracket on the Air Silencer to carry the stays came from the Experimental Fitting Shop, and they assured us that tests had shown that the Air Silencer was satisfactory without the stays. If this is not so, we require a proper report on the subject, as it will be necessary to add features to the induction pipes to carry the stays. E {Mr Elliott - Chief Engineer} /PSN (with handwritten signature) | ||