Secret memo regarding an alteration to the eccentric ratio for Spectre hydraulic tappets to prevent sticking.
| Identifier | ExFiles\Box 96\2\ scan0039 | |
| Date | 25th March 1935 | |
| x354 SECRET. To BY. {R.W. Bailey - Chief Engineer} [text struck through] from E {Mr Elliott - Chief Engineer} /JNR. {Charles L. Jenner} c. Hs {Lord Ernest Hives - Chair} /Rm. {William Robotham - Chief Engineer} RMC. [text struck through] re Spectre(Codename for Phantom III) - Hydraulic Tappets. E {Mr Elliott - Chief Engineer} /JNR. {Charles L. Jenner} 2/HP.25.3.35. Please receive herewith:- LeC.4427 showing the eccentric ratio altered from 12 to 1 to 8.75 to 1. Will you please instruct this as soon as possible as it is expected this will overcome the sticking of the eccentrics. LeC.4427 herewith. 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).