Fault of the Phantom engine running backwards when being switched off, which has been traced to the exhaust valves.
| Identifier | ExFiles\Box 66\2\ scan0263 | |
| Date | 11th November 1926 | |
| To CWB. from Hs {Lord Ernest Hives - Chair} /Rm. {William Robotham - Chief Engineer} c. to EP. {G. Eric Platford - Chief Quality Engineer} X8230 Hs {Lord Ernest Hives - Chair} /Rm {William Robotham - Chief Engineer} 4/LG4.11.26. PHANTOM ENGINE RUNNING BACKWARDS WHEN SWITCHING OFF. X699 With reference to CWB13/GM3.11.26. We have, as you state, traced the trouble of the engine running backwards after switching off, to the exhaust valves. Tests are still being carried out with a view to eliminating the trouble. We have as yet nothing which we can fit to a car. Hs {Lord Ernest Hives - Chair} /Rm. {William Robotham - Chief Engineer} | ||
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).