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).
The insufficiency of car damping systems, comparing hydraulic and solid friction methods on the 20HP model.
| Identifier | WestWitteringFiles\R\January1928-March1928\ 18 | |
| Date | 16th January 1928 guessed | |
| (2) Having done all we can then we must have ample damping, as proved by the 20HP., which, though good otherwise, was still very unsatisfactory until the damping was increased, and both cars to my mind are still insufficiently damped, and our hydraulic damping is less objectionable to solid friction, or combined hydraulic and solid. R.{Sir Henry Royce} | ||