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).
Standard top gear acceleration curve for a 1924 20 HP Touring Car.
| Identifier | ExFiles\Box 5a\5\ 05-page048 | |
| Date | 23th May 1927 guessed | |
| Velocity M.P.H. TOP GEAR ACCELERATION CURVE STANDARD. (1924 20 HP. Touring Car.) Time secs. | ||