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).
The specification for the propeller shaft.
| Identifier | ExFiles\Box 148\2\ scan0048 | |
| Date | 19th November 1938 guessed | |
| (eg Propellor Shaft Road } Exactly as for the rear axle Dyno } | ||