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).
Trial of spring rings to prevent valve over-oiling, which proved less effective than the standard grummet.
| Identifier | ExFiles\Box 158\4\ scan0163 | |
| Date | 2nd July 1937 | |
| To Hs.{Lord Ernest Hives - Chair} from Rm{William Robotham - Chief Engineer}/Swdl.{Len H. Swindell} 1360 Rm{William Robotham - Chief Engineer}/Swd1.6/AP.2.7.37 SUGGESTED PREVENTION OF VALVE OVEROILING. Regarding the above suggestion from W.Hart (Check No. 7821) this has been tried in the form of spring rings in W/M.{Mr Moon / Mr Moore} These were not so good as the normal standard grummet in preventing the oil from getting down the stems. Rm{William Robotham - Chief Engineer}/Swdl.{Len H. Swindell} | ||