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).
Diagrams and notes concerning a hydraulic damper system with relief valves and a detailed vent mechanism.
| Identifier | WestWitteringFiles\O\January1926-March1926\ Scan58 | |
| Date | 1st February 1937 | |
| Restricted vent - see detail. Longer lever for rear axle. 25 to 50 lbs. High pressure relief valve. High pressure. Low pressure. 75 to 150 lbs. Low pressure relief valve. Replenishing valves for piston leakage etc. Prevent possibility of getting in dirty oil, which would make this or any other hydraulic damper fail. Return passage to reservoir. Restricted vent, say .025. Small ball .2 about. Gauge 100 per inch. Highest point of passage. [Stamp Text] RECEIVED H8 1 FEB 1937 | ||