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).
Performance of shock dampers, oil loss issues, and potential improvements.
| Identifier | ExFiles\Box 179b\1\ img210 | |
| Date | 6th December 1932 | |
| HS.{Lord Ernest Hives - Chair} FROM R.{Sir Henry Royce} C.C. TO MR. WOR.{Arthur Wormald - General Works Manager} BY.{R.W. Bailey - Chief Engineer} MR. L. EDY. X235 re. SHOCK DAMPERS. I am very pleased indeed to hear that the up-to-date dampers are working in such a way as to call for less need of control, either by hand or automatically. I am fully aware that you consider this does not shew up so well on the big car as the small one, but I cannot see exactly why. It appears that one of the points needing care is the loss of oil at the gland. Naturally I do not know how far this continues after the oil is below the gland level, and whether it is in any way connected with the expansion of the oil and air within the damper - that is to say whether you have tried a ventilating hole in the damper at the very highest point so as to avoid any pressure above the atmosphere. Since writing the above I have seen HS.{Lord Ernest Hives - Chair} and RM.{William Robotham - Chief Engineer}, who report further good progress, and find some advantage from a superimposed hand controlled relief valve in the governor oil circuit. I agree to this, but think that probably we shall later be able to get satisfaction without it, but it is quite simple and should give no trouble. I am also pleased that sylphon type control chambers can now be obtained at reasonable cost. I always thought they ought to be, especially as in this case they are not filled and sealed. R.{Sir Henry Royce} | ||