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).
Requesting to raise the main oil pressure and to check the oil supply to the timing gears.
| Identifier | ExFiles\Box 109\4\ scan0139 | |
| Date | 13th July 1939 | |
| 666. To Rm{William Robotham - Chief Engineer}/IMW.{Ivan M. Waller - Head of Chateauroux} from Rm{William Robotham - Chief Engineer}/Swdl.{Len H. Swindell} Hotel de France, Chateauroux, Indre, France. Rm{William Robotham - Chief Engineer}/Swdl.{Len H. Swindell}8/MH.{M. Huckerby}13.7.39. 30.G.VII. In view of the exceptionally good oil consumption on this car we should like you to raise the main pressure to register a pressure of 40 lbs/sq.in. when hot at high speeds (100°C inlet to brgs.) This unit was passed off the bed at 32 lbs/sq.in. - 100°C - 4000 r.p.m. The pressure can be raised by stretching the spring, but before and after doing so would like you to check the oil supply to the timing gears particularly at low speed to confirm that the gears are not starved of oil. Rm{William Robotham - Chief Engineer}/Swdl.{Len H. Swindell} | ||