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).
Page discussing the weakness of an open propeller shaft due to the need for hand-lubrication.
| Identifier | ExFiles\Box 105\2\ scan0082 | |
| Date | 31th January 1923 guessed | |
| contd:- -2- from the gearbox. The chief weakness with the open propeller shaft is the necessity of hand-lubrication for the joints. hm.{Capt. W. Hallam - Head Repairs} | ||