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).
Multi-day vehicle performance log graphing water, oil, and air temperatures against mileage.
| Identifier | ExFiles\Box 82\2\ scan0180 | |
| Date | 14th July 1934 guessed | |
| 4 B IV READINGS EVERY 25 MILES. AFTERNOON. MORNING. AFTERNOON. MORNING. AFTERNOON. AVERAGE SPEED 51.7 MPH 51.8 MPH 47.2 MPH 44.3 MPH 52.8 MPH 45.07 DATE. 14/7/34 15/7/34 16/7/34 17/7/34 20MPG 10MPG PETROL CON. WATER TEMP. OIL TEMP. °C 90°C 80°C 70°C 60°C 50°C 40°C 30°C 20°C 10°C AIR TEMP. DRIVERS PATTINSON. ROSE. PATTINSON. ROSE. MARTINDALE. ROBERTS. MARTINDALE. ROBERTS. PATTINSON. ROSE. MARTINDALE. ROBERTS. MILES. 401. 389. 228. 351. 396. 338. | ||