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).
Note discussing spring silkiness loss due to rust and comparing two types of springing.
| Identifier | Morton\M18\ img013 | |
| Date | 17th June 1930 guessed | |
| -2- given on 23-EX is that the springs have lost their silkiness through the leaves becoming rusty and not being lubricated. That is the impression, but the real difference is in the two types of springing. We hope you can appreciate the difference we have endeavoured to give you. G.W.H. | ||