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).
Recommendation on curing engine trouble by addressing vibrations at the source and using thicker rubber mountings.
| Identifier | ExFiles\Box 137\4\ scan0290 | |
| Date | 26th 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} | ||