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).
Stutz valve lift and timing diagram showing crankshaft angular movement.
| Identifier | ExFiles\Box 23\5\ Scan044 | |
| Date | 19th December 1927 guessed | |
| STUTZ VALVE LIFT DIAGRAM EXHAUSTION LEADS INLET (CAM) BY 116° (CAMSHAFT) BOTH CAMS ARE THE SAME SHAPE. TAPPET CLEARANCE (RUNNING) = .028". VALVE DURATION WITH .028" CLEARANCE IS 230° (ON CRANKSHAFT) TAPPET CLEARANCE TO CHECK TIMING = .032". MAXIMUM VALVE LIFT (AT .028") = .34375" FIG. II VALVE TIMING LEFT DIAGRAM: T.D.C. E.C. 2° P.T.D.C. I.O. 10° P.T.D.C. 54° 42° I.C. E.O. B.D.C. .032 TAPPET CLEAR'CE RIGHT DIAGRAM: T.D.C. E.C. 5° A.T.D.C I.O. 7° B.T.D.C. 57° 45° I.C. E.O. B.D.C. .028" TAPPET CLEAR'CE. (RUNNING CONDITIONS) Y-AXIS: VALVE LIFT (INS) X-AXIS: CRANKSHAFT ANGULAR MOVEMENT. GRAPH LABELS: EXHAUST VALVE INLET VALVE RUNNING CLEARANCE (.028") VALVE OVERLAP | ||