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 and potential solutions for steering wobble, focusing on radius rods and pivot geometry.
| Identifier | WestWitteringFiles\J\December1922\ Scan35 | |
| Date | 20th December 1922 | |
| R.R. 235A (100 T) (S.H. 159 11-8-20) G.{Mr Griffiths - Chief Accountant / Mr Gnapp} 2800 [STAMP: ORIGINAL] [STAMP: RECEIVED DEC 27 1922 H8] TO HS.{Lord Ernest Hives - Chair} FROM DA.{Bernard Day - Chassis Design} DA{Bernard Day - Chassis Design}1/M20.12.22. RE. STEERING. X4264 X4263 X3465 X3441 We understand that radius rods and no spring buffers or other flexibility in the steering eliminates steering wobbles except for some that are believed to be due to the tyres. Would you please confirm that this is so? It means that we may use an irreversible steering provided we use radius rods and inflexible steering connections, but that we may by splaying the pivots very much in the end view produce a moment on the wheel when it turns which may cause a wobble, the raising and lowering of the weight of the car caused by the inclined pivots calling the springiness of the tyres into play. As far as we can see, only perfect centre point steering with perfectly vertical pivots could be entirely free from risk of wobble. DA.{Bernard Day - Chassis Design} [SIGNATURE] | ||