Instructing the modification and lightening of Spectre valves, particularly the exhaust valve.
| Identifier | ExFiles\Box 96\2\ scan0012 | |
| Date | 14th September 1934 | |
| X6094 354 To RHC {R. H. Coverley - Production Engineer} : Hs {Lord Ernest Hives - Chair} /Smth.16/KW.14.9.34. Spectre(Codename for Phantom III) Valves. We wish to lighten the Spectre(Codename for Phantom III) valves, particularly the exhaust valve. Will you therefore please modify the existing set to Hs. {Lord Ernest Hives - Chair} 1502/3. Hs {Lord Ernest Hives - Chair} /Smth. | ||
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).