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 plotting curves of specific jacket heat against engine RPM for the PH III Continental and Bentley 4 1/4 Litre engines.
| Identifier | ExFiles\Box 94\3\ scan0186 | |
| Date | 22th April 1937 guessed | |
| SHEET 7 CURVES OF SPECIFIC JACKET HEAT FOR PH III CONTINENTAL AND BENTLEY ENGINES HEAT TO JACKET B.TH.U'S/MIN/B.H.P. ENGINE R.P.M. ① PH III CONTINENTAL ENGINE ② BENTLEY 4 1/4 LITRE ENGINE | ||