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 12-cylinder Lagonda engine and a Bentley B80 engine.
| Identifier | ExFiles\Box 128\3\ scan0105 | |
| Date | 30th June 1949 | |
| 12 CYL LAGONDA AND BENTLEY 80. THESE CURVES REPRESENT A DIRECT COMP-ARISON BETWEEN B 80 AND 12 CYL. LAGONDA. 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. THE 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} B.M.E.P. SHEET 2 MEAN PISTON SPEED. FEET/MIN. LAGONDA R.P.M. B 80 R.P.M. | ||