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 curves for a six-cylinder petrol engine with a Zenith carburetor, comparing standard and high compression pistons.
| Identifier | ExFiles\Box 148\1\ scan0205 | |
| Date | 13th September 1939 | |
| 3 1/2" x SIX CYLINDER PETROL ENGINE 1256 RD 83. ZENITH CARB. 36 WEI 2 30 CH. 130 M.{Mr Moon / Mr Moore} 110 COMP. 145 E.C. 5.5 AIR. MANUAL CONTROL IGNITION. PERFORMANCE CURVES PTS/B.H.P/HR PTS/B.H.P./HR TABLE: STANDARD PISTONS 6.45-1 CR.{Mr Cra???ster / Mr Chichester} - BAR 29.9" HIGH COMP PISTONS 7.56-1 " - BAR 30.0" " " 7.0 -1 " - BAR 29.9" " " 6.75-1 " - BAR 29.65" LABELS: B.H.P PTS/HR TORQUE TORQUE LBS. FT. DEGREES ADVANCE R.P.M. DEGREES ADVANCE BTC. STAMP: KINWEST 29 AUG-13 SEPT/39 | ||