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).
Specification for the maximum pressure settings of the Shock Damper Governor Unit Safety Release Valve for various chassis.
| Identifier | ExFiles\Box 16\5\ Scan213 | |
| Date | 12th July 1934 | |
| X7520 By.{R.W. Bailey - Chief Engineer} c. to Lbx. c. to Bft/Sct. Hs{Lord Ernest Hives - Chair}/Les.11/KW.12.7.34. Shock Damper Governor Unit Safety Release Valve. For 40/50 chassis this can now be set so that the maximum pressure of 40 lbs/sq.in. is built up in the system. This figure must not be exceeded. For 25 HP. and Bentley chassis the maximum pressure can go up to a maximum of 35 lbs/sq.in. Hs{Lord Ernest Hives - Chair}/Les.{Ivan A. Leslie} | ||