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).
Continued memorandum discussing noise issues related to a magneto's sleeve and control linkages.
| Identifier | WestWitteringFiles\O\2January1926-March1926\ Scan160 | |
| Date | 13th March 1926 | |
| Contd. -2- EFC2/T13.3.26. noise from the control linkages themselves when these are new and in "just easy" adjustment, but the bigger complaint of noise is from the magneto itself due to the "flopping of the sleeve", at least it would be if the sleeve were the least bit slack. By the recent improved bearing of the sleeves, we have practically eliminated the noise from this cause (leaving practically only contact breaker noise), but this cannot be done without introducing a certain amount of frictional force which has to be overcome each way when advancing or retarding. Even if the friction due to this cause were reduced in the magneto, the action of a retarding spring on the magneto lever would not prevent the sleeve from "flopping" magnetically, and so being noisy, though no doubt it would assist the operation of the relay advance and retard. So long as we have a magneto with a sleeve, we shall be in difficulty as regards reducing the amount of work the relay has to do, and also there will be likely to be some development of slackness in the joints of the control mechanism, especially if there is the slightest little bit of slackness initially. Contd. | ||