The Spectre carburetter filter, referencing drawing LeC.4594 and modifications similar to the 20/25 engine.
| Identifier | ExFiles\Box 93\2\ scan0067 | |
| Date | 6th July 1935 | |
| To BY. {R.W. Bailey - Chief Engineer} Copy to Hs {Lord Ernest Hives - Chair} /Rm. {William Robotham - Chief Engineer} RHO +308 Bowering - Follow up please SPECTRE(Codename for Phantom III) CARBURETTER FILTER. Rm {William Robotham - Chief Engineer} JvG We send you herewith LeC.4594 of a carburetter filter for the above engine, on the same lines as that which has already been instructed for the 20/25. It should be noted that this scheme calls for a slight modification to the tappet cover and a shorter flexible petrol pipe. E {Mr Elliott - Chief Engineer} /PSN. Drawing Retained Hk {Col. T. Harker - Sales} /Powa. Att: LeC.4594. | ||
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).