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).
Noise issues in axle dampers, proposing design modifications and comparing with other systems.
| Identifier | ExFiles\Box 178\3\ img160 | |
| Date | 11th May 1932 | |
| HS.{Lord Ernest Hives - Chair} E.{Mr Elliott - Chief Engineer} DA.{Bernard Day - Chassis Design} FROM R.{Sir Henry Royce} Le-Canadel. R/FD.{Frank Dodd - Bodies}/II.5.32. C. to SG.{Arthur F. Sidgreaves - MD} WOR.{Arthur Wormald - General Works Manager} BY.{R.W. Bailey - Chief Engineer} RHC.{R. H. Coverley - Production Engineer} [Handwritten note: original sent to W.O.] Axle Dampers. J.{Mr Johnson W.M.} 3. These reported to be noisy, Rm{William Robotham - Chief Engineer} is good at these, and will tell us if it is air in damper that does not get away, or accumulates or if it is the valve chattering on its seat. Probably the latter, which he knows how to cure, it is such a likely thing to happen. I remember his mention of shrouded valves? and also, I suggest. [Diagram of a valve with annotations] This ought to be enclosed so as to get quite full of oil, with only small hole for exit. This type of valve should be more manageable for chatter than valve of double Delco. Also should be more silent. You will notice in Delco, that gland is if as shown, very liable to leak oil, i.e. under very heavy intermittent pressure. We could easier get similar control to our one valve which was not under pressure. Why not fit a car up in this way.? I have thought that perhaps the long face on the Bentley valve have been adopted to prevent chatter. Another idea is to use a curved seat to form shroud, and yet not jamb. Bed hard where dark. [Diagram of a curved seat] R.{Sir Henry Royce} | ||