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).
Blueprint graph showing valve lift diagrams for both inlet and exhaust from 500cc Rudge tests.
| Identifier | ExFiles\Box 133\2\ scan0153 | |
| Date | 14th June 1935 guessed | |
| 500cc RUDGE TESTS SHEET 1 VALVE LIFT DIAGRAM (INLET) POSITION OF CRANKSHAFT (DEGREES FROM T.D.C.) VALVE LIFT (INCHES) 300 200 100 0 320° T.D.C. 40° 80° 120° 160° B.D.C. 200° 240° VALVE LIFT DIAGRAM (EXHAUST) POSITION OF CRANKSHAFT (DEGREES FROM T.D.C.) VALVE LIFT (INCHES) 300 200 100 0 120° 160° B.D.C. 200° 240° 280° 320° T.D.C. 40° [Illegible signature/initials in bottom right corner] | ||