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).
Modifications to maintain damping by altering the contact between a disc and hub flange, and increasing torsional spring diameter.
| Identifier | ExFiles\Box 130\3\ scan0158 | |
| Date | 16th January 1941 | |
| Rm{William Robotham - Chief Engineer}/GB.1/ET.16.1.41. - 2 - To maintain damping at the required level, the direct contact between disc B. and the hub flange must be cut out. The torsional springs must be increased in diameter, so that they do not pinch the retaining wires. Incidentally the latter often wear grooves in the springs. Rm{William Robotham - Chief Engineer}/GB. | ||