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).
Design of rear springs for the EAC.7 frame, concerning top plate thickness and spring clips.
| Identifier | ExFiles\Box 16\7\ Scan004 | |
| Date | 13th March 1926 | |
| To BY.{R.W. Bailey - Chief Engineer} from DA.{Bernard Day - Chassis Design} c. to Hs.{Lord Ernest Hives - Chair} X.7410 DAL/M13.3.26. EAC.7. REAR SPRINGS. We send herewith N.sch.2162 giving particulars of the 66" rear springs for the new EAC.7 frame. It will be seen that the top plate is going to be rather thin compared with previous 40/50 top plates. We suggest that it may be desirable to use 3 or even 4 clips per side to support this plate in compression. We think it better to do this than to upset the balance of the spring by introducing an abnormally thick top plate with corresponding nip in the lower plates. We have shewn a conventional spring and not one with rebound leaves partly because we believe R.{Sir Henry Royce} is not greatly in favour of the latter, and partly because we cannot ourselves make out that the rebound leaves recently tested on the front springs are very different from the leaves in the normal position. We are writing to Hs.{Lord Ernest Hives - Chair} for further information on this point. Would you kindly send us an extra print of N.sch. 2162 for despatch to R.{Sir Henry Royce} DA.{Bernard Day - Chassis Design} | ||