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 build two Phantom III rear silencers to a provided sketch.
| Identifier | ExFiles\Box 152\3\ scan0189 | |
| Date | 8th February 1937 | |
| 323 1297 To HPS. {Horace Percy Smith - Experimental Factory Mgr} from Rm {William Robotham - Chief Engineer} /Wym. {G. Harold Whyman - Experimental Manager} Rm {William Robotham - Chief Engineer} /Wym. {G. Harold Whyman - Experimental Manager} 11/JH.8.2.37. Phantom III Rear Silencer. Will you please build up 2 rear silencers to the sketch handed to T.Elston. The same shells can be used which were made for the previous type silencer, but were never actually used. The only difference in the two silencers are the dimensions of the inner pipe one is 2.00" and the other 2.250". Both silencers should be logged the entire length of the steel, but not the 2 ends. Rm {William Robotham - Chief Engineer} /Wym. {G. Harold Whyman - Experimental Manager} | ||