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).
Hand-drawn graph logging vehicle performance metrics over three days in 1934.
| Identifier | ExFiles\Box 5a\2\ 02-page413 | |
| Date | 26th July 1934 guessed | |
| 21 G IV. READINGS EVERY 25 MILES MORNING. AFTERNOON. MORNING. AFTERNOON. MORNING. AFTERNOON. AVERAGE SPEED 50.3 41.7 50.1 47.3 49.95 45.7 DATE 30/7/34 31/7/34 1/8/34 PETROL CONS. 20MPG 10MPG WATER TEMP OIL TEMP °C 90°C 80°C 70°C 60°C 50°C AIR TEMP 40°C 30°C 20°C 10°C DRIVERS ROSE. WALSH. GRYLLS. HAMILTON. ROSE. GRYLLS. HAMILTON. ROSE. GRYLLS. HAMILTON. MILES 386. 245. 357. 302. 368. 305. | ||