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).
Test results for steering wobble on a 5-EX car at various speeds.
| Identifier | ExFiles\Box 28\4\ Scan195 | |
| Date | 28th October 1922 | |
| X457 Mr. Hives from GWH.{George W. Hancock - Head Chateauroux} 28.10.22. 5-EX CAR - STEERING WOBBLE TEST. With tyres 32 X 4½ - 60 lbs. pressure. The period of wobbles came out as follows :- M.P.H. Wobbles per min. 5 328 5 324 5 324 5 324 5 320 5 320 12 340 12 328 12 340 12 348 12 352 12 332 __ __ GWH.{George W. Hancock - Head Chateauroux} | ||