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).
Series of graphs and diagrams illustrating the effect of water circulation on overheating in a car's cooling system.
| Identifier | ExFiles\Box 92\2\ scan0092 | |
| Date | 2nd July 1930 guessed | |
| GRAPH II EFFECT OF CIRCULATION ON OVERHEATING 19 E.X. CAR A BACK PRESS CAUSED BY RESTRICTION 15 LBS/D'' WATER OUTLET FROM THE CYL: BLOCK RESTRICTED TO 23-.125 HOLES. TOP WATER TEMP ATS TEMP. 20°C SHUTTERS OPEN. STANDARD RESTRICTED CIRCULATION SHUTTERS CLOSED STANDARD RESTRICTED CIRCULATION TOP WATER TEMP. C° ROAD SPEED 75 M.P.H. Graph B: CIRCULATION ON PII WATER SYSTEM. RAD: E.79448 6/7 1/2 TUBES. MEAN BOTTOM WATER TEMP. 67°C RAD: E.79321 FLOW GAL/MIN ENGINE R.P.M. TWO RAD: OUTLETS. SINGLE RAD: OUTLETS. RESTRICTION OF 23 .125 HOLES IN OUTLET PIPE. 65 M.P.H. Graph C: CIRCULATION ON PII WATER SYSTEM AT HIGH TEMPERATURES. CIRCULATION GAL/MIN BOTTOM WATER TEMP. C° ENGINE R.P.M. 2500 DOUBLE RAD: OUTLET SINGLE RAD: OUTLET Diagram: DOUBLE RADIATOR OUTLET 6"M/M 7.5"M/M TUBES 4.0" 23.6" 26.8" | ||