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).
Secret memo from 'Sg' regarding the weight of the Spectre engine and building a second version with lightweight materials.
| Identifier | ExFiles\Box 96\4\ scan0005 | |
| Date | 6th July 1934 | |
| SECRET. HS{Lord Ernest Hives - Chair} 358 X4644 To R.{Sir Henry Royce} from Sg.{Arthur F. Sidgreaves - MD} re SpectreCodename for Phantom III. Sg{Arthur F. Sidgreaves - MD}12/E6.7.34 Copy to Wor.{Arthur Wormald - General Works Manager}Hs.{Lord Ernest Hives - Chair}EH. RMC. I am in receipt of E2/HP.4.7.34 and E.10/HP.4.7.34. I have noted what all you say relative to the weight of the first engine and what you hope to be able to do, and also re the question of building up the second SpectreCodename for Phantom III engine with light weight steel cylinder linings and using magnesium wherever possible. Doubtless I shall hear the results in due course. Sg.{Arthur F. Sidgreaves - MD} | ||