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 plotting BHP at the road wheels against engine RPM for a Bentley chassis, including component and timing specifications.
| Identifier | ExFiles\Box 155\1\ scan0098 | |
| Date | 23th June 1933 | |
| BENTLEY CHASSIS - 3 B N (UNIT B N°2) GEAR BOX TO N. SCH. 3658 10/41 REAR AXLE IGNITION SETTING 18° B.T.D.C (LEC 3522) EXHAUST CUT OUT (LEC 8441) OPEN SPEEDS UP TO & INCLUDING 2500 R.P.M IN TOP GEAR 3000 R.P.M IN 3RD GEAR 3250 R.P.M UPWARDS IN 2ND GEAR B.H.P. AT ROAD WHEELS ENGINE R.P.M. VALVE TIMING .020" CLEARANCE I.O. 6 1/4° B.T.D.C. E.C. 45° P.T.D.C. I.C. 50° P.B.D.C. E.O. 50° B.B.D.C. UNIT B N°2 CAMSHAFT - 113° - LEC 3292 PISTONS:- STD 20/25 H.P. E.57122 CYLINDER HEAD:- E.B. 222 (6.35:1 COMPRESSION RATIO INCREASED BY USING SHEET METAL GASKET) BROOKLANDS LAP SPEED (CUT OUT OPEN) - 86.32 M.P.H. | ||