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).
Engine performance graph showing Brake Horsepower (BHP) and Brake Mean Effective Pressure (B.M.E.P.) against Revolutions Per Minute (R.P.M.).
| Identifier | ExFiles\Box 179b\2\ img119 | |
| Date | 15th November 1932 guessed | |
| BHP 140 130 120 110 100 B.M.E.P. LBS 100 90 80 70 60 R.P.M. 500 1000 1500 2000 2500 3000 3500 M.P.H. 11x41 AXLE 70 80 90 7" x 20" TYRES | ||