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).
Results of engine oil flow tests, comparing a worn engine to a recently overhauled one.
| Identifier | ExFiles\Box 131\2\ scan0088 | |
| Date | 20th November 1937 | |
| Podes SWDC. Doubt if this will ever be traced. 1113 To BY.{R.W. Bailey - Chief Engineer} from Rm{William Robotham - Chief Engineer}/GWH.{George W. Hancock - Head Chateauroux} Rm{William Robotham - Chief Engineer}/GWH.{George W. Hancock - Head Chateauroux}1/N.20.11.37. Rm{William Robotham - Chief Engineer} Kingsbury - Oil Flow Tests. This looks hopeful as a check for big wear By We hope in the near future to be able to give you data on oil flow tests. Kingsbury have now rigged up a motor to turn the engine at 230 R.P.M. so as to obtain consistent results. It is now a question of getting cars in to apply the test. We believe valuable data can be obtained by recording the oil pressure built up by the speed of the engine, and the time factor of flow of oil through the bearings. The following two tests are interesting in this respect, but we require further tests to fully verify the results. Engine came in with slight thump, Oil flow test: Time for 1 gall. of oil 3m. 12 sec. Oil pressure 5 lbs. Engine just overhauled (bearings taken up etc) Time for 1 gall. of oil 20m. 4 sec. Oil pressure 32 lbs. Practically a 6 to 1 ratio. The oil is supplied at a constant pressure of 30 lbs by air pressure, and we allow half a gallon to flow before timing, so that there is no engine oil left in the bearings etc. Rm{William Robotham - Chief Engineer}/GWH.{George W. Hancock - Head Chateauroux} | ||