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).
Blueprint graph of engine performance curves showing Horse Power, Torque, and M.E.P.
| Identifier | ExFiles\Box 183\M22\ img077 | |
| Date | 1st May 1921 guessed | |
| HORSE POWER 40 120 TORQUE & M.E.P. 50 150 FT. LBS. 60 180 (LBS. PER SQ. INCH) DYNAMOMETER TEST. CUT OUT CLOSED. M.E.P. & TORQUE CURVE. BENCH TEST - CUT OUT OPEN. H.P. CURVE. BENCH TEST - CUT OUT CLOSED. H.P. CURVE. DYNAMOMETER TEST - CUT OUT OPEN. H.P. CURVE. DYNAMOMETER TEST. CUT OUT CLOSED. H.P. CURVE. ROAD SPEED WITH ROAD SPEED WITH ROAD SPEED WITH (34-50) | ||