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 oscillation diagrams for a standard 20 HP crankshaft at various RPMs.
Identifier | ExFiles\Box 6\1\ 01-page023 | |
Date | 9th December 1912 guessed | |
TORSIONAL OSCILLATION DIAGRAMS FOR STD 20 H.P. CRANKSHAFT 1100 R.P.M. 9 OSCILLATIONS PER REV. 1600 R.P.M. 6 OSCILLATIONS PER REV. 2000 R.P.M. 3350 R.P.M. DOTTED LINE INDICATES THE UNDAMPED CURVE THREE OSCILLATIONS PER REV. CRITICAL SPEED 3000 R.P.M. 1/2 OSCILLATIONS PER REV. DAMPED CURVES SHOWING PHASE OF OSCILLATION 500 R.P.M. This Photograph by WRIGHT & LOGAN, Southsea. Copyright. COPIES CAN BE OBTAINED from MESSRS WYMAN & SONS Ltd LONDON, or from them direct at Southsea, mentioning Date, Reference Number and Name of Subject. | ||