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).
The trial of K.L.G. F.50.X sparking plugs in a Phantom III unit due to pre-ignition issues.
| Identifier | ExFiles\Box 142\3\ scan0315 | |
| Date | 24th August 1937 | |
| To Rm.{William Robotham - Chief Engineer} c. to Rm{William Robotham - Chief Engineer}/JE. 1204 Rm{William Robotham - Chief Engineer}/RC.{R. Childs}9/JH.24.8.37. re K.L.G. F.50.X. Sparking Plugs. We have handed to Rm{William Robotham - Chief Engineer}/JE. one dozen K.L.G. sparking plugs for trial in the exhaust side of Phantom III unit No.6. This plug has a shorter reach and also a higher heat factor than the standard FE.30X. We understand that the existing standard plugs in the exhaust side were giving trouble due to pre-ignition. Rm{William Robotham - Chief Engineer}/RC.{R. Childs} JHS | ||