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).
Instructions for altering damper loading using specified washers to improve low and high-speed ride.
| Identifier | ExFiles\Box 55\4\ Scan342 | |
| Date | 8th April 1929 guessed | |
| contd :- -2- Therefore we favour them because we believe they give a better low speed ride and at the same time give increased damping for high speed work. We attach a sketch shewing the location of the stud which carries these washers. The stud should be withdrawn and the washers and distance pieces removed for this test, the stud then being replaced. With regard to the damper loading. This can be obtained by altering the washers A.{Mr Adams} under the valve caps except in the case of the high pressure valve on the front dampers. (The cap nearest the side channel). In this case a small washer should be fitted at X. We are sending under separate cover the washers to be inserted. Their respective positions are : REAR O.S. L.P. .127 H.P. .000 N.S. L.P. .076 H.P. .010 FRONT L.P. .095 H.P. .070 under spring. L.P. .122 H.P. .070 under spring. ____________ ____________ Will you please try this alteration to the dampers as soon as possible, and report on it. At Derby we have repeatedly tried a low pressure loading half that of the high pressure loading at Mr. Royce's request, but our opinion has always been that the best results are obtained when the contd :- | ||