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 top and bottom water temperatures plotted against seven different engine cooling configurations during a Brooklands test.
| Identifier | ExFiles\Box 12\7\ 07-page105 | |
| Date | 2nd July 1930 | |
| GRAPH III TEMPERATURE C° TOP WATER TEMP BOTTOM WATER TEMP (1) FULL WEAK NO FAN (2) AS (1) BUT MIXTURE NORMAL NO FAN. (3) AS (2) BUT FAN SPRING LOADED (4) AS (3) BUT FAN BELT CHOC À BLOC. (5) AS (4) BUT FAN 1" NEARER RAD. (6) AS (5) BUT DOUBLE RAD. OUTLET (7) AS (6) BUT ALL BONNET SHUTTERS OPEN. CONDITIONS FOR TEST (1) ALL BONNET SHUTTERS CLOSED STANDARD UNDERSHIELD 62.5 M.P.H. ATS TEMP. 20°C 19 EX CAR 11 x 41 AXLE BROOKLANDS TEST 2/7/30 | ||