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 effectiveness of the centre point lubrication system in cold versus hot weather.
| Identifier | ExFiles\Box 27\1\ Scan283 | |
| Date | 17th September 1929 | |
| X3806 To Cx.{Major Len W. Cox - Advertising Manager} from Hs{Lord Ernest Hives - Chair}/Rm.{William Robotham - Chief Engineer} Hs{Lord Ernest Hives - Chair}/Rm.{William Robotham - Chief Engineer}1/MJ.17.9.29. With reference to Cx.{Major Len W. Cox - Advertising Manager}32/M/16.9.29. The effectiveness of the centre point lubrication system is precisely the same in cold or hot weather. The only difference in the functioning of the system due to temperature variations is that when the atmosphere is cold the charge of oil delivered by the foot operated pump takes rather longer to reach all the points in the system. The only evidence of this is that the pedal on this pump takes longer to reach its normal position than in hot weather. The front and back axle systems which are lubricated by a single shot grease gun action also operates normally in the coldest weather. This matter is dealt with in the instruction book. Hs{Lord Ernest Hives - Chair}/Rm.{William Robotham - Chief Engineer} | ||