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).
Crankshaft torsional vibration and solutions involving thicker rubber engine mountings.
| Identifier | ExFiles\Box 12\6\ 06-page039 | |
| Date | 31th March 1931 guessed | |
| - 2 - harmonics or octaves of the torsional vibration of the crankshaft or whirling of the flywheel. I feel sure much can be done to cure the trouble at source, then compromise engine mounting - exactly as standard but thicker rubber. R.{Sir Henry Royce} | ||