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 heat flow to jacket water per litre versus engine RPM for a 40/50 HP high compression car engine.
| Identifier | WestWitteringFiles\L\July1924-September1924\ Scan28 | |
| Date | 1st September 1924 guessed | |
| SHEET 3. HT. FLOW TO JACKET WATER PER LITRE 40/50 H.P. CAR HIGH COMPN. B.TH.U'S/MIN/LITRE. 500 400 300 200 R.P.M. ENG. 500 1000 1500 2000. HEAT FLOW/LITRE AT FULL LOAD | ||