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).
Performance graph showing Horse Power and M.E.P. curves for a 40/50 engine model with a standard exhaust system.
| Identifier | ExFiles\Box 181\M7\ img075 | |
| Date | 1st May 1923 guessed | |
| M.E.P. & F, GII ALL CURVES TAKEN WITH STANDARD EXHAUST SY, 40/50. 26 CU. INS. DISPLACEMENT. ALL CURVES TAKEN WITH, HORSE POWER, P (LBS PER D'), H.P. 40/50 BENCH, H.P. 40/50 DYN | ||