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).
Investigation into the loss of load in front dampers, identifying the cause as metal pieces from the interlever.
| Identifier | ExFiles\Box 109\4\ scan0175 | |
| Date | 28th July 1939 | |
| 666a To Rm{William Robotham - Chief Engineer}/IMW.{Ivan M. Waller - Head of Chateauroux} from Rm{William Robotham - Chief Engineer}/HFP. Hotel de France, Chateauroux, Indre, France. Rm{William Robotham - Chief Engineer}/HFP.11/MH.{M. Huckerby}28.7.39. 30.G.VII FRONT DAMPERS. We have investigated the loss of load in front dampers and the following facts have transpired. The loss of load is caused by pieces of metal becoming trapped under the main valve: further, these pieces of metal appear to originate from the interlever when the main shaft is pressed into it. At present when the main shaft has been pressed into the interlever for the first time and removed the interlever is washed in paraffin and blown off. This is not sufficient to detach pieces of metal which are raised from, but still attached to the interlever: subsequently, when the interlever is pressed in during assembly these pieces become detached and fall into the damper. It is suggested that if the interleavers are carefully examined and roughness on the splines is as far as possible removed, the loss of load due to the above trouble should be minimised. We are sending the pieces necessary to convert the damper valves to the uncontrolled type and washers to adjust the load to 120 lbs. Rm{William Robotham - Chief Engineer}/HFP. | ||