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).
Suggested modifications to a shock damper, including a technical sketch.
| Identifier | WestWitteringFiles\V\March1931-September1931\ Scan201 | |
| Date | 19th May 1931 | |
| Co. Bell - Please carry out tests on lines indicated Rm{William Robotham - Chief Engineer} HS.{Lord Ernest Hives - Chair} FROM DA.{Bernard Day - Chassis Design} ORIGINAL RECEIVED 1931 MAY SHOCK DAMPERS DA{Bernard Day - Chassis Design}2/M 19.5.31. X235 filed: With reference to HS{Lord Ernest Hives - Chair}/RM{William Robotham - Chief Engineer}5/KT12531., we suggest that you should try the following points: (1) Reduce the width of the valve seat probably by machining off the end of the valve. This is to avoid any possibility of the oil pressure acting momentarily on the increase of area as the valve opens. We notice that the seat is comparatively speaking rather wide. (2) Chamber out immediately above the valve seat and below the valve piston surface as per sketch. (3) To avoid the possibility of air accumulating in the spring chamber drill an escape through the top of the spring chamber and then radially through the guide hole. (You probably have already done this.) Is the oil in an emulsified state either more or less than the standard damper? DA.{Bernard Day - Chassis Design} | ||