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).
Power curve graph for the B.60 No. 1 engine with a chain-driven camshaft, showing BMEP, BHP, and back pressure against engine RPM.
| Identifier | ExFiles\Box 124\1\ scan0278 | |
| Date | 22th August 1939 | |
| VALVE TIMING:- I.O. 3 3° A.T.D.C. .030 TAPPET CLEARANCE I.C. 25 7° A.B.D.C. E.O. 46 5° B.B.D.C. E.C. 8 3° B.T.D.C. CYL HEAD EXS 1758 .100 OFF FACE 6·9:1 COMPRESSION RATIO B.M.E.P. B.H.P. BACK PRESSURE POWER CURVE ON B.60 N° 1 22.8.39 (CHAIN DRIVEN CAMSHAFT) ENGINE R.P.M. BACK PRESSURE INS HG B.M.E.P. LBS/IN² & B.H.P. RM{William Robotham - Chief Engineer}/J.R.S. | ||