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).
Using friction damping and flexible mounting to reduce vibration, with an accompanying diagram.
| Identifier | ExFiles\Box 14\5\ Scan090 | |
| Date | 1st March 1929 guessed | |
| contd :- -2- give damping to vertical motion and no horizontal flexibility. That is, I am suggesting friction damping in parallel with flexible mounting. I have suggested much more rigid front feet than rear, because it is less liable for the vibration to reach the body and scuttle dash from the front feet than the rear. This, and the exhaust will have to be a compromise in the end - it is always so. 18-EX is very good although probably not so good as you have - perhaps it is a remarkably good body. One or both friction material instead of rubber. RUBBER R.{Sir Henry Royce} | ||