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).
Graph comparing car speed against time for different vehicle models and gears.
| Identifier | ExFiles\Box 29\3\ Scan188 | |
| Date | 23th February 1928 guessed | |
| TOP GEAR PERFORMANCE STANDARD BODY. OPEN TOURING 5 SEATER CONTINENTAL. STREAMLINE 4 SEATER CAR SPEED M.P.H TIME SECS 3RD GEAR TOP GEAR MAX SPEED 86.5 M.P.H MAX SPEED 78.5 M.P.H CONTINENTAL 2.1 TONS 16x52 AXLE 4.75 COMP. R.{Sir Henry Royce} STANDARD 2.35 TONS 15x52 AXLE 4.00 COMP. R.{Sir Henry Royce} | ||