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 of water flow in gallons per minute versus engine RPM for a complete water system.
| Identifier | ExFiles\Box 66a\4\ scan0270 | |
| Date | 24th January 1928 guessed | |
| CIRCULATION IN COMPLETE R.R. WATER SYSTEM WATER FLOW GALS/MIN 40 30 20 10 STANDARD FLOW MINIMUM EFFICIENT FLOW TYPICAL FLOW OF OBSTRUCTED RADIATOR ENGINE R.P.M 500 1000 1500 2000 2500 3000 | ||