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 Horse Power, Torque, and Mean Effective Pressure against engine revolutions per minute under various test conditions.
| Identifier | ExFiles\Box 181\M7\ img066 | |
| Date | 28th May 1928 guessed | |
| HORSE POWER. & M.E.P. (LBS. PER SQ:) TORQUE FT LBS: REVS: PER MIN: BENCH TEST. - CUT OUT OPEN - HP BENCH TEST - CUT OUT CLOSED DYNAMOMETER TEST. CUT OUT DYNAMOMETER TEST. CUT Axis Values (Horse Power): 20, 30, 40, 50, 60 Axis Values (Torque/M.E.P): 60, 90, 120, 150, 180 Axis Values (Revs: Per Min:): 500, 750 | ||