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 engine overheating.
| Identifier | WestWitteringFiles\U\May1930-July1930\ Scan134 | |
| 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 | SHUTTERS CLOSED TOP WATER TEMP. C° STANDARD RESTRICTED CIRCULATION STANDARD RESTRICTED CIRCULATION ROAD SPEED 75 M.P.H. GRAPH B: CIRCULATION ON P.I WATER SYSTEM. RAD: E.79448 6/7 1/2 TUBES. MEAN BOTTOM WATER TEMP: 67°C RAD E.79321 TWO RAD OUTLETS. SINGLE RAD: OUTLETS. RESTRICTION OF 23 .125 HOLES IN OUTLET PIPE. 65 M.P.H. Vertical Axis: FLOW GAL/MIN Horizontal Axis: ENGINE R.P.M. GRAPH C: ENGINE R.P.M. 2500 DOUBLE RAD OUTLET SINGLE RAD OUTLET Vertical Axis Left: CIRCULATION GAL/MIN: Vertical Axis Right: CIRCULATION ON P.I WATER SYSTEM AT HIGH TEMPERATURES. Horizontal Axis: BOTTOM WATER TEMP. C° DIAGRAMS: 6 M/M 7.5 M/M TUBES 4.0" 23.6" 26.8" DOUBLE RADIATOR OUTLET. | ||