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).
Modifications to a ball valve to address hydraulic shock absorber knocks.
| Identifier | ExFiles\Box 55\4\ Scan406 | |
| Date | 18th November 1930 | |
| To BY.{R.W. Bailey - Chief Engineer} From Hs{Lord Ernest Hives - Chair}/Rm.{William Robotham - Chief Engineer} c. to RHC.{R. H. Coverley - Production Engineer} X235 Hs{Lord Ernest Hives - Chair}/Rm.{William Robotham - Chief Engineer}4/MJ.18.11.30. HYDRAULIC SHOCK ABSORBER KNOCKS. With reference to the proposed restriction and the movement of the ball valve over the air vent. We find that at present we must not limit the movement of this ball valve to less than .010 or the efficiency of the shock absorber suffers. We therefore consider that this is the figure to be aimed at in the modifications at present being introduced. Hs{Lord Ernest Hives - Chair}/Rm.{William Robotham - Chief Engineer} | ||