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).
Torsional vibration diagrams for a B.23 OHC unit during full throttle tests with a normal damper load.
| Identifier | ExFiles\Box 132\1\ scan0047 | |
| Date | 26th April 1939 guessed | |
| TORSIONAL VIBRATION DIAGRAMS. B.23 OHC UNIT. FULL THROTTLE TESTS WITH NORMAL DAMPER LOAD. Top row, left to right: Diagram 1: T.D.C. 3600 R.P.M. CRANKSHAFT DEFLECTION = 0.18° Diagram 2: T.D.C. 3700 R.P.M. CRANKSHAFT DEFLECTION = 0.23° Diagram 3: T.D.C. 3800 R.P.M. CRANKSHAFT DEFLECTION = 0.53° Diagram 4: T.D.C. 3900 R.P.M. CRANKSHAFT DEFLECTION = 0.74° Bottom row, left to right: Diagram 5: T.D.C. 4000 R.P.M. CRANKSHAFT DEFLECTION = 0.90° Diagram 6: T.D.C. 4100 R.P.M. CRANKSHAFT DEFLECTION = 1.12° Diagram 7: T.D.C. 4200 R.P.M. CRANKSHAFT DEFLECTION = 1.175° Diagram 8: T.D.C. 4300 R.P.M. CRANKSHAFT DEFLECTION = 1.44° | ||