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).
Performance and temperature log chart tracking readings every 25 miles over several days.
| Identifier | ExFiles\Box 5a\2\ 02-page414 | |
| 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 90c 80c 70c 60c 50c AIR TEMP 40c 30c 20c 10c DRIVERS Rose. Walsh. Rose. Grylls. Hamilton. Grylls. Hamilton. Rose. Grylls. Hamilton. MILES. 386. 357. 368. 245. 302. 305. | ||