Critical speed, big end weight, and the weakness of the 40/50 shaft pins.
| Identifier | WestWitteringFiles\R\2December1927-February1928\ Scan021 | |
| Date | 5th December 1927 guessed | |
| contd :- -2- should enable us to put the critical speed to above 4000 r.p.m. even with the increased big end weight. The 40/50 shaft to LeC.2488 seems only relatively weak on the pins. Hs {Lord Ernest Hives - Chair} /Rm. {William Robotham - Chief Engineer} | ||
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).