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).
Typed memorandum about a rear main bearing leak on a Wraith car, suggesting a ventilation-based solution.
| Identifier | ExFiles\Box 108\1\ scan0288 | |
| Date | 31th January 1938 | |
| 1208 600a Rm{William Robotham - Chief Engineer}/IMW.{Ivan M. Waller - Head of Chateauroux} from Rm.{William Robotham - Chief Engineer} Rm{William Robotham - Chief Engineer}6/R.31.1.38. ily. I hope the Wraith car arrived satisfactor- It was suffering from a leak at the rear main bearing which was not in evidence on the Test Bed, nor when running the engine with the car stationary in the Garage. It is, therefore, evidently an effect produced by the motion of the car through the air. Similar leaks have always been cured by ventilation of the clutch plate, and we suggest that you try a large diameter pipe run from the clutch inspection plate to the rim of the flywheel, and elsewhere, to see if you can get rid of the trouble. The only difference between Wraith and the 25/30, where this trouble was cured by a hole in the clutch inspection plate, is that now there is a greater distance between this plate and the flywheel than on the 25/30. Rm.{William Robotham - Chief Engineer} | ||