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).
Steering oscillation, wobble, and the effect of a damped pendulum lever and buffer springs.
| Identifier | WestWitteringFiles\N\July1925-September1925\ Scan41 | |
| Date | 7th July 1925 | |
| R.R. 493A (50 H) (D.D. 31, 12-6-25) J.H.D. EXPERIMENTAL REPORT. -2- Expl. No. REF: He4/LG17.7.25. alternatly or 'tramping'. It then builds up into a wobble which causes violent oscillation of the steering. The damped pendulum lever has the effect of preventing the oscillation of the steering wheel building up, in fact it acts in the same way as it does with the low speed wobbles. All tests, so far, show that the damped pendulum lever is very encouraging. We have carried out further tests on the Hispano to note the effect of the weak buffer springs which they use. There is the same effect on that car as we get on our own when we use weaker springs in the side steering tube, i.e., if the steering is turned when the car is on the camber of the road which offers a certain resistance against the wheels turning, as soon as the car has mounted the camber and this resistance is reduced, the steering will over-shoot. Again, if the car is going along a level road, the steering wheel can be deflected sharply approximately half a turn without the car deviating from its course - all that happens is that the buffer springs in the side steering tubes are compressed. If the steering wheel is moved gradually, then, of course, the road wheels answer to each movement of the steering wheel. This effect is very noticeable if, when driving fast, conditions arise when one has to cut in and out of traffic. Haj | ||