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 requiring hand-lubrication for its joints.
| Identifier | WestWitteringFiles\J\January1923\ Scan40 | |
| Date | 29th 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. Hs.{Lord Ernest Hives - Chair} | ||