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).
Table of test results logging radiator and throttle temperatures under various driving conditions.
| Identifier | ExFiles\Box 50\3\ Scan155 | |
| Date | 16th August 1921 guessed | |
| -2- With hot spot. | Temp. of water in radiator. start. finish. | Temp. of throttle start. finish. | Length of test miles. | Conditions. | Tests ---|---|---|---|---|--- ON | 80°C | 75°C | 80°C | 96°C | 6 times. | 10 to 40 M.P.H. accelerator. | 16 ON | 79°C | 94°C | 76°C | 162°C | 1 | full throttle with hand control 10 M.P.H. | 17 ON | 74°C | 98°C | 76°C | 79°C | 1 | full throttle with accelerator 10 M.P.H. | 18 ON | 79°C | 98°C | 76°C | 62°C | 1 | " " " " | 19 ON | 79°C | 98°C | 76°C | 67.5°C | 1 | " " " " | 20 ON | 76°C | 87°C | 74°C | 70°C | 1 | " " " " | 21 ON | 76°C | 97°C | 78°C | 168°C | 1 | full throttle with hand control 10 M.P.H. | 22 ON | 76°C | 98°C | 76°C | 103°C | 1 | full throttle with accelerator 10 M.P.H. | 23 ON | 79°C | 98.5°C | 76°C | 172°C | 1 | full throttle with hand control 10 M.P.H. | 24 | ||