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).
On shock damper design, discussing schemes for controllable damping based on stroke length and vehicle speed.
| Identifier | WestWitteringFiles\T\March1929-December1929\ Scan295 | |
| Date | 12th April 1929 | |
| HS.{Lord Ernest Hives - Chair} BY.{R.W. Bailey - Chief Engineer} FROM R.{Sir Henry Royce} Copy to SG.{Arthur F. Sidgreaves - MD} Copy to WOR.{Arthur Wormald - General Works Manager} ORIGINAL SHOCK DAMPERS. R3/M4:12.29. +7520 X5320, Mr. Hardy is working on two or three schemes for giving a short stroke with no damping, having the longer strokes with the usual damping, bearing in mind that we shall probably be able to introduce later a controllable system, either automatic or by hand. It will be remembered that I particularly pointed out that as far as I could judge we required a quick stroke to have the same damping (as nearly as possible) as a slow stroke, but a long stroke to have more damping than a short stroke, and that there should be little or no damping for a short distance from the point of rest. We might add to this that although the speed of the vibrations should not increase the damping, it would be desirable to have greater damping the faster the car travels. I think we have for a long time all agreed to this latter. R.{Sir Henry Royce} [STAMP TEXT: RECEIVED 1929 XII] | ||