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).
New schemes for Phantom II and 20 HP shock dampers, with reference to specific drawings.
| Identifier | ExFiles\Box 105\3\ scan0083 | |
| Date | 12th May 1929 | |
| By.{R.W. Bailey - Chief Engineer} from Da.{Bernard Day - Chassis Design} Sg.{Arthur F. Sidgreaves - MD} Hs.{Lord Ernest Hives - Chair} X5528 Da{Bernard Day - Chassis Design}2/M5.12.29. X.7520 X.5520 PHANTOM II. SHOCK DAMPERS. We send herewith N.sch.2994. showing the con. rod for the rear shock damper with balanced spring control on the balls, the object being to round off the corners of the diagram. This differs from previous schemes of this kind principally by the undamped movement having been reduced. With the stronger spring it is only about .030". We send also N.sch.2995 showing the application of the same con. rod to the 20 HP. rear damper. It will be noticed that on the Phantom II arrangement the clearance under the bottom of the con.rod joint is the same as on Phantom I. Should it be found possible to reduce the free movement this could be still further reduced. We suggest that the rod should not at the moment be fitted to the front 20 HP. dampers. Da.{Bernard Day - Chassis Design} | ||