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).
Summary of test results showing average speed, petrol consumption, and oil consumption.
| Identifier | ExFiles\Box 4\9\ 09-page144 | |
| Date | 7th September 1925 guessed | |
| - 8 - Total average speed during test ........ 34.41 m.p.h. " petrol consumption " " ........ 17.38 m.p.g. " oil " " ........ 737.32 m.p.g. -------------------------- G.W.Hancock. [Signature] | ||