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).
Experiments and observations on the phenomenon of wheel wobble.
| Identifier | ExFiles\Box 29\1\ Scan324 | |
| Date | 14th March 1928 | |
| To Basil Joy WHEEL WOBBLE. Y457. MR. ROBOTHAM : I have had the opportunity of observing experiments on Wheel Wobble and one of them consisted in driving the front wheels of a chassis by 2 drums and watching the wobble which was set up. By this means we found out one or two things about wheel wobble which you cannot discover when driving normally on the road. One thing was that the simplest way to stop wheel wobble was to prevent it starting. We find that you can easily eliminate wobble if you do not have a cross steering tube or a side steering tube, or in fact, if you dispense with any portion of the steering gear which is really essential to enable the car to be steered at all! Wobbles are of two kinds - low speed which occur below 30 m.p.h. - high speed which occur above 40 m.p.h. In exceptional cases the two may intermingle but for general classification the speed ranges given will be found to hold good. As is already generally known, low speed wobbles are docile compared with their obstreperous high speed relations. They can almost invariably easily be banished by a small quantity of friction in the steering gear or wheel castor adjustment. High speed wobbles, on the other hand, may reach an intensity which has to be observed to be believed. contd :- | ||