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).
Programme to investigate low speed wobbles on the Bentley III bumper chassis during drum testing.
| Identifier | ExFiles\Box 119\1\ scan0065 | |
| Date | 5th January 1938 | |
| 1024 also 200B By.{R.W. Bailey - Chief Engineer} from Rm.{William Robotham - Chief Engineer} Da.{Bernard Day - Chassis Design} Rm{William Robotham - Chief Engineer}/Kennington. Rm{William Robotham - Chief Engineer}1/R.5.1.38. Attached is a copy of a programme we are proposing to carry out to ascertain why the Bentley III bumper chassis behaves as it does on the drums. Obviously, the presence of low speed wobbles during a bumper test produces an overload on the chassis, and it is, therefore, impossible to compare the results obtained on the chassis which is not running within the low speed wobble range with one which is wobbling. For this reason we have got to get rid of the observed phenomenon. Rm.{William Robotham - Chief Engineer} | ||