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).
Analysis of steering column deflection, proposing dash and suspension modifications as solutions.
| Identifier | WestWitteringFiles\S\March1928-May1928\ Scan114 | |
| Date | 6th April 1928 guessed | |
| contd :- -2- but this is obviously a condition exaggerated by the bumper as it did not worry us at all on 15-EX. Therefore, whilst we are interested in the cause of the deflection, it is not a serious trouble. We think that for the standard car (not the sports car) the cast dash on 12-EX is suitable for standardisation if the present aluminium lugs on the front of the base (C. in sketch) are increased to give a larger bearing area on the frame side member. This dash certainly held the column for 10,000 miles on 12-EX, and a similar dash is fitted to the car 14-EX that is at le CanadelHenry Royce's French residence. We have shewn on the bump that the degree of damping on the front axle affects the problem enormously. No shock absorbers quite as bad as too much damping, present standard hydraulics very good. Therefore with a less raked column, rigidly fixed where it passes through the dash, lower road speeds and more flexible suspension with a better method of holding the dash to the frame as on 12-EX, the type of dash fitted to this car seems to be capable of dealing with the column. Hs{Lord Ernest Hives - Chair}/Rm.{William Robotham - Chief Engineer} sheet attached. | ||