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 E.A.C. and Hispano inlet valve lift diagrams against crankshaft degrees.
| Identifier | ExFiles\Box 22\1\ Scan144 | |
| Date | 12th March 1924 guessed | |
| E.A.C. & HISPANO VALVE LIFT DIAGMS. COMPARED. INLET VALVES. .50 .40 .30 .20 .10 E.A.C. HISPANO E.A.C. REDUCED TO SAME LIFT AS HISPANO HISPANO E.A.C. BOTTOM CENTRE CRANKSHAFT DEGREES. | ||