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 of air temperature rise tests across a radiator and from the radiator to the floorboards, plotted against road speed.
| Identifier | Morton\M19\ img289 | |
| Date | 23th September 1931 | |
| TESTS :- AIR TEMPERATURE RISE ACROSS RADIATOR. AIR TEMPERATURE RISE FROM FRONT OF RADIATOR TO FLOOR BOARDS. USING 26B" HEXAGONAL MATRIX TUBES. (AVERAGE AIR TEMP: 11.5°C). BONNET ON. (AVERAGE AIR TEMP: 13°C). CYLINDER WATER TEMP:- 64°C. CYLINDER WATER TEMP:- 85°C. Y-AXIS: AIR TEMPERATURE INCREASE (°C). X-AXIS: ROAD SPEED (M.P.H.). SHADED AREA REPRESENTS AIR TEMP: INCREASE DUE TO EXHAUST AND ENGINE HEAT RADIATION. KEY: ACROSS RADIATOR :- 1) LOW WATER TEMP: 2) HIGH WATER TEMP:. FRONT OF RADIATOR TO FLOORBOARDS :- 1) LOW WATER TEMP: 2) HIGH WATER TEMP:. | ||