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).
Tests concerning the importance of replenishing valve size on high-pressure front shock absorbers.
| Identifier | ExFiles\Box 16\4\ Scan227 | |
| Date | 12th December 1930 | |
| X-7520 Duy 12.12.30. Royce, ElmsteadHenry Royce's home in West Wittering, West WitteringHenry Royce's home town. Tests show size of replenishing valve very important on high pressure stroke front shock absorber. Any reduction below .156 greatly reduces shock absorber efficiency. Robotham. | ||