Revised specification for the Myth Engine M.40 No.1, detailing new valve springs fitted.
| Identifier | ExFiles\Box 109\3\ scan0240 | |
| Date | 2nd September 1943 | |
| Chassis To: [obscured], from Wym {G. Harold Whyman - Experimental Manager} /HN {F. C. Honeyman - Retail orders} /CP. c. to FJH. {Fred J. Hardy - Chief Dev. Engineer} c. [obscured] 700 Wym {G. Harold Whyman - Experimental Manager} /HN {F. C. Honeyman - Retail orders} /CP. 3/LH. {Mr Haworth} 2.9.43. Myth Engine M.40 - No.1. Chassis Austin 10 H.P. Specification of the above engine is revised as follows :- Work carried out at Clan 21.8.43. Valves & Fittings, LOP.RE.1896. The following new parts fitted :- RM. {William Robotham - Chief Engineer} 1131 Inlet Valve Springs - replacing RE.2916. RM. {William Robotham - Chief Engineer} 1132 Exhaust " " - " RE.1888. Wym {G. Harold Whyman - Experimental Manager} /HN {F. C. Honeyman - Retail orders} /CP. 61 | ||
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).