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).
Tests on crankcase ventilation to reduce acidity, corrosion, and oil leaks, with a suggested modification for B.III and Wraith models.
| Identifier | ExFiles\Box 132\3\ scan0107 | |
| Date | 16th September 1938 | |
| By.{R.W. Bailey - Chief Engineer} from Rm.{William Robotham - Chief Engineer} c. Da.{Bernard Day - Chassis Design} c. Da{Bernard Day - Chassis Design}/Jnr.{Charles L. Jenner} c. Da{Bernard Day - Chassis Design}/McS. Rm{William Robotham - Chief Engineer}6/R.16.9.38. We started up tests on crankcase ventilation because we have heard from time to time that this reduces the tendency to acidity in the crankcase. It is alleged that this in turn reduces cylinder bore wear. We admit that we cannot understand the reasoning by which these assertions are arrived at, but now that we have got a means of getting very adequate crankcase breathing hope to carry out some tests. Until we are sure that crankcase ventilation reduces corrosion we propose to use our breather to get a depression in the crankcase and so reduce oil leaks. We think the modification to the existing breather suggested is a very good one and should be incorporated on B.III and Wraith. Rm.{William Robotham - Chief Engineer} | ||