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 and bar chart illustrating the effects of the fan, speed, and ventilation on the engine cooling system.
| Identifier | ExFiles\Box 14\7\ Scan036 | |
| Date | 2nd July 1930 | |
| GRAPH I EFFECT OF FAN ON COOLING SYSTEM. BROOKLANDS TEST 2ND JULY 1930 TEMPERATURE °C NO FAN STANDARD SPRING TENSIONED WHITTLE BELT. WHITTLE BELT TIGHTENED CHOC À BLOC. BELT CHOC À BLOC AND FAN 1" NEARER RAD. TOP WATER TEMP. BOTTOM WATER TEMP. ATS TEMP. 20°C STANDARD 6 M/M 7 1/2 M/M RAD ALL SHUTTERS CLOSED 62.5 M.P.H. 19 EX CAR WT. 48 CWT 11 x 41 AXLE. EFFECT OF SPEED AND VENTILATION ON COOLING SYSTEM. TEMPERATURE C° TOP WATER RAD. E.{Mr Elliott - Chief Engineer} 77675 26.0" 23.25" FAN CHOC À BLOC 6 M/M 7 1/2 M/M RAD TUBES B. ATS TEMP 20°C. 19 EX. CAR. 75 M.P.H. 60 M.P.H. ALL SHUTTERS OPEN 78°C. ALL SHUTTERS CLOSED 84.5°C. ALL SHUTTERS OPEN 73°C ALL SHUTTERS CLOSED 78.5°C | ||