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).
Instruction to increase the diameter of the Spectre air silencer from 6.00' to 7.00' for production.
| Identifier | ExFiles\Box 93\2\ scan0094 | |
| Date | 1st October 1935 | |
| To By.{R.W. Bailey - Chief Engineer} X308 Hs{Lord Ernest Hives - Chair}/Wym.{G. Harold Whyman - Experimental Manager}9/KW.1.10.35. Will you please note that we have increased the dia. of the SpectreCodename for Phantom III air silencer from 6.00" to 7.00" and would like you to instruct accordingly for production. Hs{Lord Ernest Hives - Chair}/G.H.Whyman. | ||