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).
Planned test on the rear spring movement of a Phantom vehicle.
| Identifier | ExFiles\Box 67a\1\ scan0203 | |
| Date | 19th May 1926 | |
| To G.Ratcliffe - from Hs{Lord Ernest Hives - Chair}/Rm.{William Robotham - Chief Engineer} X8410 Hs{Lord Ernest Hives - Chair}/Rm{William Robotham - Chief Engineer}1/LG19.5.26. PHANTOM REAR SPRING MOVEMENT TEST. We wish to carry out some tests on the amplitude and frequency of the spring movements relative to the body on the rear of 44-PK over the stretch of road over which our suspension tests have already been carried out. The object of the test is to determine the approximate frequency and roughly the amplitude of the spring movements when driving over a road at 23 m.p.h. The means of obtaining the results is by an electrical contact on the Chronograph. Hs{Lord Ernest Hives - Chair}/Rm.{William Robotham - Chief Engineer} | ||