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 comparison graph for an extra short duration camshaft against a standard shaft.
| Identifier | ExFiles\Box 1\10\ B001_X106 TO X 110-page067 | |
| Date | 21th June 1933 guessed | |
| CAMSHAFT HS.{Lord Ernest Hives - Chair}968. EXTRA SHORT DURATION FOR SLOW RUNNING COMPARED WITH STANDARD 107° SHAFT. LARGE PER: CARBS: INDUCTION PIPE E.100958 WITH POCKET FILLED IN. SLEEVE FITTED IN INDUCTION PIPE TAPERING FROM 1.75" TO 1.500" DIA. LARGE VALVE TURBULENT HEAD. B.H.P. R.P.M. B.M.E.P. LBS/SQ" RM.{William Robotham - Chief Engineer}PR 41. Diagram 1: E.100863, 107°, IN, Ex, .020, 8, 5, 34, 42 Diagram 2: HS.{Lord Ernest Hives - Chair}968, 108°, IN, Ex, .020, 6, 8, 38, 25 Diagram 3: HS.{Lord Ernest Hives - Chair}968, IN, Ex, TDC, .020, 32, 34 | ||