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 showing the effect of bottom water temperature on circulation flow and pump suction depression at 2500 engine RPM.
| Identifier | ExFiles\Box 19\4\ Scan128 | |
| Date | 10th July 1930 guessed | |
| GRAPH IV, EFFECT OF TEMP. ON COMPLETE CAR CIRCULATION., RADIATOR E.{Mr Elliott - Chief Engineer} 79951, CIRCULATION GAL/MIN, DEPRESSION ON SUCTION SIDE OF THE PUMP, INS HG, FLOW GAL/MIN, DEPRESSION SUCTION SIDE OF PUMP, INS HG., 2500 ENGINE R.P.M., BOTTOM WATER TEMP. C°, 40, 35, 30, 25, 20, 50, 60, 70, 80, 90, 100°, 12", 10", 8", 6" | ||