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).
Comparing two shock damper springs to achieve a required load of 80 lbs.
| Identifier | ExFiles\Box 55\4\ Scan004 | |
| Date | 19th January 1927 | |
| To BY/HEB.{H. Biraben} from Hs{Lord Ernest Hives - Chair}/Rm.{William Robotham - Chief Engineer} X235 Hs{Lord Ernest Hives - Chair}/Rm{William Robotham - Chief Engineer}1/LG19.1.27. SHOCK DAMPER SPRING. The spring F.76429 gives 90 lbs. load at 13.5° radius. We have previously tested spring F.74515 which gives 150 lbs. in the rear shock damper so this should be slightly nearer the required load. We suggest these two springs should enable a spring to be correctly calculated to give exactly the 80 lbs. required. Hs{Lord Ernest Hives - Chair}/Rm.{William Robotham - Chief Engineer} | ||