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 the acceleration of Standard versus Continental Phantom models.
| Identifier | ExFiles\Box 69\4\ scan0379 | |
| Date | 23th February 1928 guessed | |
| ACCELERATIONS STANDARD V CONTINENTAL PHANTOM STANDARD 2.35 TONS 15 x 52 AXLE 4.0-1 COMP RATIO. CONTINENTAL 2.1 TONS 16 x 52 AXLE 4.75 COMP RATIO. ALL TESTS C.O. OPEN ACCELERATION FT | SEC² ROAD SPEED M.P.H. 3RD GEAR TOP GEAR | ||