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).
Hydraulic shock dampers, addressing 'chattering' and oil leakage issues.
| Identifier | ExFiles\Box 55\3\ Scan092 | |
| Date | 6th March 1926 | |
| X235 Expl: Report. Expl: No. 235 Ref. Hs {Lord Ernest Hives - Chair} /Rm {William Robotham - Chief Engineer} 1/LG6.3.26. To R. {Sir Henry Royce} from Hs {Lord Ernest Hives - Chair} /Rm. {William Robotham - Chief Engineer} c. to CJ. BJ. c. to RG. {Mr Rowledge} E. {Mr Elliott - Chief Engineer} c. to DA. {Bernard Day - Chassis Design} BY. {R.W. Bailey - Chief Engineer} c. to OY. Wor. {Arthur Wormald - General Works Manager} HYDRAULIC SHOCK DAMPERS. Chattering. We have tried a temporary arrangement of the device suggested by R. {Sir Henry Royce} for overcoming 'chattering' as in the attached sketch. Our experiments so far have indicated that this adjustable leak with the non-return ball entirely overcomes the trouble caused by air in the system becoming trapped over the high pressure valve. We are now experimenting to find the minimum leak X which will produce the required cure. The significance of this improvement is (a) No skill will now be required to eliminate air from the system when filling the shock absorber. (b) If the quantity of oil in the shock absorber becomes reduced for any reason, the chattering will not re-appear. Oil leaking & temperature rise. We have carried out further investigations to ascertain the causes of the great increase in oil leaks with a rise in temperature. We took a standard damper casing and filled it with oil contd :- [Text on blueprint diagram] ADJUSTED NON-RETURN LEAK TEMPORARY ARRANGEMENT | ||