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 engine performance curves for Horse Power, Torque, and M.E.P. against revolutions per minute.
| Identifier | Morton\M7\ img066 | |
| Date | 5th May 1921 guessed | |
| HORSE POWER & M.E.P. TORQUE REVS: PER MIN: FT LBS: (LBS. PER SQ:) 60. 180 50. 150 40. 120 30. 90 20. 60 500 750 BENCH TEST. - CUT OUT OPEN. - HP BENCH TEST. - CUT OUT CLOSED DYNAMOMETER TEST. CUT OUT DYNAMOMETER TEST. CUT C | ||