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).
Testing ball bearings with altered cages and a simplified rear axle to address bearing life and noise issues.
| Identifier | ExFiles\Box 115\2\ scan0615 | |
| Date | 4th January 1941 | |
| 1020 To Rm{William Robotham - Chief Engineer}/FJH.{Fred J. Hardy - Chief Dev. Engineer} from Rm.{William Robotham - Chief Engineer} Copy to Rm{William Robotham - Chief Engineer}/Wym.{G. Harold Whyman - Experimental Manager} Rm.{William Robotham - Chief Engineer}8/ML.4.1.41. With reference to your comments on the necessity for elongated holes in the bore race cage on an angular contact and deep groove ball bearings. We should like to get two or three sets of 40 mm. bearings running on our Experimental cars on semi-floating rear axles, to prove the point, i.e. whether this bearing life will be adequate if the cages are altered. Will you please also co-operate with Rm{William Robotham - Chief Engineer}/Wym.{G. Harold Whyman - Experimental Manager} in getting another simplified rear axle fitted up on 12.B.V, similar to 9.B.V, so that we can find out whether the simplification is responsible for the axle noise. Rm.{William Robotham - Chief Engineer} | ||