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).
Graph comparing the performance (B.HP vs R.P.M.) of a standard and an experimental camshaft on a Standard Phantom engine.
| Identifier | ExFiles\Box 66a\2\ scan0229 | |
| Date | 15th August 1919 | |
| G/120 CAMSHAFT COMPARISON ON STD PHANTOM ENGINE. THE EXPL. CAMSHAFT HAS THE INLET DURATION INCREASED BY 28° AND THE EXHAUST BY 12°. THE POSITION OF INLET OPENING AND EXHAUST CLOSING REMAIN THE SAME AS STANDARD. Y-AXIS: B.H.P. 30, 40, 50, 60, 70, 80, 90, 100, 110, 120 X-AXIS: R.P.M. 500, 1000, 1500, 2000, 2500, 3000. CURVES: STANDARD CAMSHAFT, LONG DURATION CAMSHAFT. 15/8/19. | ||