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 memo with diagrams discussing the construction of hydraulic dampers, particularly the valves and drilling.
| Identifier | WestWitteringFiles\V\October1930-February1931\ Scan385 | |
| Date | 26th February 1931 | |
| DA{Bernard Day - Chassis Design}/HRF ) FROM R.{Sir Henry Royce} DS/RM.{William Robotham - Chief Engineer} BY.{R.W. Bailey - Chief Engineer} ) (At Le CanadelHenry Royce's French residence.) Copy to SG.{Arthur F. Sidgreaves - MD} WOR.{Arthur Wormald - General Works Manager} F.{Mr Friese} R1/M26.2.31. X235 RECEIVED ORIGINAL HYDRAULIC DAMPERS. (CONTINUED.) X235 We must do something very quickly and the simplest thing we can do is to put the replenishing valves in the piston, but it is possible you can find a convenient place in the body though at the moment it seems difficult. FIG: 1. It will be noticed that the bush can be at the left hand here, in which case the shaft this end might be reduced to .8", but it would need something to hold the bush in and make a blind. Anyway you may like a bush in this end but I started by boring through and closing the bearing end by expanding disc. It is not necessary for the valve to seat exactly but it is assumed that the slack in the stem would allow the valve to find its seat. All the drilling seems possible with only 1 plug at the ends of the longitudinal holes. The cyl. is drilled right through which permits of a good bore quickly. The ends can be closed by tapped plugs or a plain plug can be pushed in and the body threaded on the outside, thread milled very easy to hold truly on expanding mandril. The ring nut keeps the end of the cyl. from bursting and it is better that the joint should not turn round when screwing up as it does with a screwed in plug, which also increases the tendency for cyl. to burst. FIG. 2. SIDE ELEVATION OF LONGITUDINAL DRILLING. The drilling from each end passes one over the other. The relief valves are horizontal, each one over its drilling. A small milling cut is made so that a large drill may be used. R.{Sir Henry Royce} | ||