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).
Tests to ascertain the cause of knocks in hydraulic shock dampers, identifying end play in the lever shaft as the issue.
| Identifier | ExFiles\Box 55\3\ Scan290 | |
| Date | 25th October 1926 | |
| To BY.{R.W. Bailey - Chief Engineer} from Hs{Lord Ernest Hives - Chair}/Rm.{William Robotham - Chief Engineer} Y235 Hs{Lord Ernest Hives - Chair}/Rm{William Robotham - Chief Engineer}2/LG25.10.26. KNOCKS ON HYDRAULIC SHOCK DAMPERS. Y235 We have been carrying out tests to ascertain the cause of the knocks which have occurred on one or two shock dampers. We find that one of the most important features is the amount of end play in the lever shaft. We understand that owing to the cumulative limits on the job, it is very difficult to reduce this end play to a small quantity. We suggest however that on production the best possible should be made of this detail if necessary by selective assembly, otherwise we feel certain that there will be a number of rejections in the test due to knocks. Hs{Lord Ernest Hives - Chair}/Rm.{William Robotham - Chief Engineer} | ||