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).
Report page discussing low-speed valve loading, shock absorber efficiency, and axle movement analysis.
| Identifier | WestWitteringFiles\S\June1928-August1928\ Scan027 | |
| Date | 8th June 1928 guessed | |
| contd :- -3- the low speed valve, the low speed loading ceases to exist which is undesirable if the car is relying on the dampers to prevent high speed wobbles. It has occurred in our tests. A velocity pressure increase would always ensure some low pressure for quick movements, to clean the low pressure valve seat is not easy. We hope to measure the pressures set up at the ball end by ahydraulic device in the connecting tube, and so determine the mechanical efficiency of the shock absorbers. We are also endeavouring to get a picture of the front and rear axle movements against a time basis, so that we can once and for all establish the relation between the axle velocity for Boulevard high frequency small amplitude movements, and humped back bridge low frequency large amplitude oscillations. Hs{Lord Ernest Hives - Chair}/Ru. | ||