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).
Set of three graphs comparing the Useful Brake Mean Effective Pressure (BMEP) of the Japan I and Peregrine engines.
| Identifier | ExFiles\Box 1\8\ B001_X100 Engine Chassis-page222 | |
| Date | 5th November 1932 guessed | |
| CURVES SHEWING THAT J1 CAN GIVE MORE SPECIFIC OUTPUT WITHOUT DETONATION THAN PER ALL TESTS SHELL MEX FUEL GRAPH A: COMPARISON OF USEFUL B.M.E.P. THAT CAN BE OBTAINED ON THE ROAD JAPAN I COMPARED WITH PEREGRINE LEGEND A: (1) JAPAN I, (2) PEREGRINE GRAPH B: JAPAN I LEGEND B: (1) MAXIMUM B.M.E.P. WITH FULL IGNITION ADVANCE (2) USEFUL B.M.E.P. WITH IGNITION RETARDED TO ELIMINATE DETONATION GRAPH C: PEREGRINE LEGEND C: (1) MAXIMUM B.M.E.P. WITH FULL IGNITION ADVANCE (2) USEFUL B.M.E.P. IGNITION RETARDED TO ELIMINATE DETONATION AXIS LABELS: B.M.E.P., R.P.M. | ||