Graph showing the open exhaust power curve for a B.60 No. 4 unit after 15,000 miles.
| Identifier | ExFiles\Box 111\3\ scan0088 | |
| Date | 27th April 1939 | |
| OPEN EXHAUST POWER CURVE B.60 No 4 UNIT (15,000 MILES) WRAITH SPLIT SKIRT PISTONS S/ZN ORIGINAL SHORT DURATION CAMSHAFT I.O. - 8° B.T.D.C. E.O. - 43° B.B.D.C. TIMING .030 CLEARANCE I.C. + 28° B.B.D.C. E.C. + 3° B.T.D.C. MOCK UP CONTINENTAL INON SYSTEM 1 3/4 MANIFOLD 2 - 1 3/4 SU CARBS. ORIGINAL HEAD WITH MOD THROAT PD 292 - 6.2:1 C.R NO 1, 2, & 3. SODIUM FILLED EX VALVES NO 4, 5, & 6 SOLID STEM EX VALVES ETHYL FUEL MOT - C - OIL B.H.P. AND M.E.P. (lbs/□") R.P.M. SWOE 27-4-39 | ||
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).