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 plotting Brake Horsepower (B.HP) against flywheel degrees B.T.D.C. at various engine speeds.
| Identifier | ExFiles\Box 168\3\ img190 | |
| Date | 1st June 1939 guessed | |
| B.H.P. 1600 R.P.M. 8° LATE 1.1 H.P. LOSS 4° LATE 0.25 H.P. LOSS T.D.C. LOSS NIL 3200 R.P.M. 8° LATE 0.4 H.P. LOSS 4° LATE LOSS NIL T.D.C. 1 H.P. LOSS 800 R.P.M. 8° LATE 3.1 H.P. LOSS 4° LATE 1.6 H.P. LOSS T.D.C. 0.5 H.P. LOSS 2400 R.P.M. 8° LATE 0.3 H.P. LOSS 4° LATE LOSS NIL T.D.C. LOSS NIL DEGREES ON FLYWHEEL B.T.D.C. LOSSES WITH FINAL GOVERNOR CURVE SHOWN FOR EACH SPEED. | ||