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).
Troubleshooting noise from a dynamo ball bearing and harshness in the clutch, with a suggested design change.
| Identifier | ExFiles\Box 74\2\ scan0260 | |
| Date | 22th September 1919 | |
| X.3459 X.3439 49GR.{George Ratcliffe} Ex Trace R6/9. 22.9.19. The noise in the neighbourhood of the gear box was traced to be the dynamo ball bearing. It was reduced slightly by running the belt slacker. X.0654 Regarding the clutch, this was harsh, and not very easy to get the gears in. It was made perfectly good by reducing the vigour of the clutch brake, making it later and lighter and by lubricating the clutch with about half a syringe full of castor oil. It was then as good as one could wish it to be. How long the oil will last remains to be tested as I fear the retaining ring or the clutch, is not as oil retaining as it should be. I think it would be safer in the future if we made the lip for retaining the oil on the clutch ring forging, rather than as a separate casting with a joint under extremely high centrifugal oil pressure trying to cause it to leak. R.{Sir Henry Royce} | ||