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).
Test observing the wrapping effect on bearing faces when a new, slightly oval rocker and eccentric are fitted.
| Identifier | ExFiles\Box 96\2\ scan0185 | |
| Date | 11th December 1936 guessed | |
| (2) Another test showed, that if a new bush was fitted with a slightly oval Rocker and eccentric, and a very small upward load applied to the eccentric arm. - the arm would move upwards away from the plunger in a series of little jerks caused by a self wrapping effect of the bearing faces. It should have been mentioned previously, the engine was ticking over slowly for this test. It is impossible to reproduce this state of affairs with perfectly concentric parts. K Scholes. | ||