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).
Attached notes on the subject of valve spring coil vibrations.
| Identifier | ExFiles\Box 56\2\ Scan101 | |
| Date | 3rd September 1930 | |
| X 290 To R.{Sir Henry Royce} from EFC. c. Sg.{Arthur F. Sidgreaves - MD} c. E.{Mr Elliott - Chief Engineer} Rg.{Mr Rowledge} EFC7/AM 3.9.30. Please find attached copy of some notes dealing with the subject of valve spring coil vibrations and which were prepared for Mr.Bailey to his request. EFC. Copies attached. | ||