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 top and bottom water temperatures against a series of seven different engine and cooling test conditions.
| Identifier | ExFiles\Box 14\7\ Scan039 | |
| Date | 2nd July 1930 | |
| GRAPH II TEMPERATURE °C 90, 85, 80, 75, 70, 65, 60 TOP WATER TEMP BOTTOM WATER TEMP DATA POINTS: 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 11x41 AXLE BROOKLANDS TEST 2/7/30 | ||