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 of B.M.E.P. and B.HP against R.P.M. for a 3.9 Litre 6-cylinder engine.
| Identifier | Morton\M19\ img282 | |
| Date | 7th February 1930 | |
| MULTICYL. ENGINE HIGH POWER HEAD 85 x 115 M/M 6 CYLS. 3.9 LIT C.R. 5.45/1 TWO 42 M/M ZENITH TRIPLE VENTURI CARBS 34 CHOKES SHELL No 1 PETROL B.M.E.P. 120 100 80 B.M.E.P. (SINGLE CYL.) B.M.E.P. (6 CYL.) B.H.P. DOTTED CURVE. SINGLE CYL. CURVE OBTAINED ON 7/FEB/30 & LATER REPORTED TO HAVE BEEN BEATEN R.P.M. 1000 14 18 2000 24 28 3000 34 | ||