Graph comparing engine temperature tests with radiator shutters working versus held open.
| Identifier | ExFiles\Box 11\5\ 05-page085 | |
| Date | 23th April 1939 | |
| 28-EX. TEMPERATURE TESTS. APRIL. 23. 1939. TWO FRONT FLAPS IN BONNET ON EXHAUST SIDE OPENED FORWARD RAD. SHUTTERS WORKING RAD. SHUTTERS HELD OPEN OIL TEMP. WATER TEMP. AIR TEMP. UNDER BONNET. REAR EXHAUST SIDE. OIL TEMP. WATER TEMP. AIR TEMP. UNDER BONNET UNDER 45°C. (NOT REGISTERED) ATMOSPHERIC TEMP. READINGS TAKEN EVERY MILE IN RUN OF TEN MILES AT 60 M.P.H. 100°C 90°C 80°C 70°C 60°C 50°C 40°C 20°C 10°C 0°C | ||
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).