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).
Causes of 'joggling' in Phantom steering, attributing it to gyroscopic reaction and road shocks.
| Identifier | WestWitteringFiles\S\2April1928-June1928\ Scan090 | |
| Date | 17th May 1928 | |
| HS.{Lord Ernest Hives - Chair} FROM R.{Sir Henry Royce} C. to BJ. WCR. BY.{R.W. Bailey - Chief Engineer} PN.{Mr Northey} CWB. ORIGINAL R7/M17.5.28. PHANTOM STEERING. X8430 (struck through) X7430 My own ideas have been for some time that the "joggling" at the steering wheel is largely due to gyrostatic reaction. DA.{Bernard Day - Chassis Design} however thinks that it is a combination of road shocks and gyrostatic reaction, sometimes acting together, and sometimes opposing one another. One would think that it would be possible to rock and vibrate the axle about equal to a jacked up position so that the road wheels would not be touching anything. It is possible that we shall be able to send you some further definite suggestions for carrying out this experiment. One believes that in addition to the spring and damped pendulum lever we shall require some suit- able damping on the axle itself, as now employed on the spheres, which type of damping I fear is not satisfactory; I should prefer dry friction or hydraulic (fluid friction.) R.{Sir Henry Royce} | ||