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).
Design improvements for hydraulic shock dampers.
| Identifier | WestWitteringFiles\V\March1931-September1931\ Scan098 | |
| Date | 3rd April 1931 | |
| DA{Bernard Day - Chassis Design}/HDY.{William Hardy} ) FROM R.{Sir Henry Royce} HS{Lord Ernest Hives - Chair}/RM.{William Robotham - Chief Engineer} ) (At Le CanadelHenry Royce's French residence.) BY.{R.W. Bailey - Chief Engineer} ) Copy to SG.{Arthur F. Sidgreaves - MD} WOR.{Arthur Wormald - General Works Manager} ORIGINAL R6/M3.4.31. X255. HYDRAULIC SHOCK DAMPERS. I suggest that we might fix the cyl. at an angle so as to get all the air to one end where we could let it pass out via the lubricating passages to the bearings. As the replenishing valves prevent a vacuum it will be seen that the lubricated bearing would be quite a good seal. Referring to the rear position the leading end could be the higher and the angle would correct the difference between bump and rebound: all could be drawn squarely as I wished. The lever might be some standard length - 10" to 12" - unless there is some very definite reason for the odd fractions which are difficult to remember in adapting the damper position and thinking in angles. The centre part of my shaft was just increased in dia. the depth of the serrations so that the shaft would guide itself nicely in the die. If Works preferred knurling it would still be suitable. I should not use aluminium washers for fixing to frame. I think the cross drilling of the piston to allow for reamer clearance hardly necessary. I hope to post tomorrow (Easter Sunday) my drawing for the piston which I think is easier to make and equally good. R.{Sir Henry Royce} | ||