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 removal of restriction discs from the front axle control dampers of vehicle 18-EX.
| Identifier | ExFiles\Box 12\1\ 01-page121 | |
| Date | 13th December 1928 | |
| X.7420 To Rm.{William Robotham - Chief Engineer} 13.12.28. SS.{S. Smith} FRONT AXLE CONTROL DAMPERS. 18-EX ----------------------------------- Three restriction discs removed from each damper - leaving five in position. W.Bell. | ||