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).
Graph plotting the rise in air temperature through a radiator matrix against road speed for chassis 19 EX.
| Identifier | ExFiles\Box 131\1\ scan0024 | |
| Date | 16th September 1931 | |
| CHASSIS 19 EX. RISE OF AIR TEMPERATURE THROUGH RADIATOR MATRIX. MATRIX TUBES 6x7.5MM. WITH 4 INDENTATIONS. TESTS CARRIED OUT WITH NO BONNET OR UNDERSHIELDS FITTED IN TOP GEAR. ENGINE WATER TEMP. 63°C: ---o--- ENGINE WATER TEMP. 85°C: ---x--- AIR TEMP. RISE THRO' MATRIX (DEGREES C) ROAD SPEED (M.P.H.) | ||