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 comparing the Brake Mean Effective Pressure (B.M.E.P.) of a Bentley B80 engine against a 12-cylinder Lagonda engine.
| Identifier | ExFiles\Box 170\1\ img077 | |
| Date | 30th June 1940 | |
| MD BENTLEY B80. A) B.M.E.P. OF ENGINE UNIT B.80 No.3 IN CHASSIS 11 B 5 FITTED WITH TWIN EXHAUST SYSTEM AND AIR SILENCER i.e. CURVE REPRESENTS ROAD CONDITIONS. B) B.M.E.P. OF 12 CYL. LAGONDA. THE CURVE IS DERIVED FROM ACCELERATION FIGURES AND REPRESENTS ROAD CONDITIONS. C) 12 CYL. LAGONDA TEST BED B.M.E.P. FROM FIGURES SUPPLIED BY JNR.{Charles L. Jenner} SHEET 2 LAGONDA R.P.M. B 80 R.P.M. PISTON SPEED. FEET/MIN. Rm{William Robotham - Chief Engineer} 6/ML.30.6.40 Rm{William Robotham - Chief Engineer}/TMS 8.6.40 | ||