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).
Use of a higher rated spring with a taper armature and the necessity of fluid damping.
| Identifier | ExFiles\Box 64\4\ scan0128 | |
| Date | 15th December 1928 | |
| Contd. -2- EFC/T15.12.28. It may, for instance, appear more suitable with the taper armature to use a higher rated spring as at present. Personally, I cannot see how it is possible with any combination of spring and armature taper to have a condition where it neither thumps in nor thumps out, unless some form of fluid damping is utilised. EFC. | ||