Graph comparing the acceleration performance of various vehicle models and configurations.
| Identifier | ExFiles\Box 21\2\ Scan030 | |
| Date | 3rd December 1926 guessed | |
| Top Graph: ACCELERATION. HIGH V LOW COMPRESSION RATIO. 40/50. Y-Axis: VELOCITY M.P.H. X-Axis: TIME SECONDS. Legend: OPEN TOURING CARS. 10 EX. WT. EMPTY 2.27 TONS COMP. RATIO 3.8/1. 98 N.K. WT. EMPTY 2.34 TONS COMP. RATIO 4.1/1. 10 EX. 1.5 CWT LIGHTER THAN STANDARD TOURER. ALSO MORE SPORTING LINES. Bottom Graph: ACCELERATION. 20 H.P V 40/50. Y-Axis: VELOCITY M.P.H. X-Axis: TIME SECONDS. Legend: OPEN TOURING CARB. STANDARD PHANTOM 2.34 TONS. 20 H.P. EMPTY WT. 1.56 TONS. Side Text: ALL FIGURES DIRECT DRIVE. C.O. CLOSED. | ||
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).