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).
On oil temperatures without an oil cooler, recommending against its deletion.
| Identifier | ExFiles\Box 91\2\ scan0322 | |
| Date | 13th September 1937 guessed | |
| -2- not in operation during the final test but we are satisfied that the main trouble in France was the choking of the filer. With the oil cooler out of operation the max. oil temperature on overdrive was 120°C. This is considerably too high for white metal bearings and the deletion of the oil cooler is not therefore recommended. Rm{William Robotham - Chief Engineer}/IMW.{Ivan M. Waller - Head of Chateauroux} | ||