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).
Request for a drawing of a new valve spring for Armstrong dampers to increase maximum load.
| Identifier | ExFiles\Box 152\2\ scan0105 | |
| Date | 3rd March 1938 | |
| To By {R.W. Bailey - Chief Engineer} /Ald. {F. Allwood - Experimental Design} from Rm {William Robotham - Chief Engineer} /Les. c. By. {R.W. Bailey - Chief Engineer} 1293 Rm {William Robotham - Chief Engineer} /Les.3/MH. {M. Huckerby} 3.3.38. ARMSTRONG DAMPERS. Will you please let us have a drawing for a valve spring to replace Armstrong's spring 535-Z. The new spring should have a rating of approximately 360 lbs. per in. and will be required to carry a load 30 lbs. This spring will enable the maximum damper loads to be increased. Rm {William Robotham - Chief Engineer} /Les. | ||