Secret memorandum regarding an experimental Spectre exhaust manifold modification.
| Identifier | ExFiles\Box 93\1\ scan0020 | |
| Date | 22th June 1935 | |
| Handwritten: x323/Wyman. We should make sure that these are made P Typed: To BY. {R.W. Bailey - Chief Engineer} from E {Mr Elliott - Chief Engineer} /JNR. {Charles L. Jenner} Typed: SECRET. Typed: E {Mr Elliott - Chief Engineer} /JNR. {Charles L. Jenner} 1/HP.22.6.35. Typed: c. RHC. {R. H. Coverley - Production Engineer} Hs {Lord Ernest Hives - Chair} /Rm. {William Robotham - Chief Engineer} Handwritten: Instructed [Signature] Typed: re Spectre(Codename for Phantom III) Exhaust Manifolds. Typed: We send you a further exhaust manifold LeC.4544 which is purely experimental; it consists of using the weight of metal of the cooling fins to thicken the pipe. No pattern work is desired as the foundry can use the pattern to LeC.4408 by rubbing away the sand from the outside of the mould, the coring of the pipe and branches being unaltered. Typed: Drawing to BY. {R.W. Bailey - Chief Engineer} Typed: Print to RHC. {R. H. Coverley - Production Engineer} Typed: E {Mr Elliott - Chief Engineer} /JNR. {Charles L. Jenner} | ||
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).