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).
Change in specification for chassis front springs, specifically regarding the use of flat plates and square-edge steel.
| Identifier | ExFiles\Box 80\2\ scan0343 | |
| Date | 27th November 1920 | |
| x4056 Hs{Lord Ernest Hives - Chair} NOV 29 1920 To WD{Mr Wood/Mr Whitehead} from DA.{Bernard Day - Chassis Design} Copy to BY.{R.W. Bailey - Chief Engineer} Copy to HS.{Lord Ernest Hives - Chair} DA{Bernard Day - Chassis Design}10/CB27-11-20. CHASSIS FRONT SPRINGS. RECEIVED With reference to your WD{Mr Wood/Mr Whitehead}6/NJ26-11-20, since the instructions to Messrs Woodhead were given to make the spring plates perfectly flat, and to use square-edge steel, our views have undergone considerable change. We are now fairly certain, for instance, that the flatness of the plates between the tips of the leaves is not of importance, because the plates do not bear there, but only at the leaf points. On the other hand, if it becomes necessary to standardise ferodo interleaves, the concavity between the leaves is rather an advantage, as it tends to retain the ferodo in place. Further, the plates are not now ground all over. We think that we need not insist on flat plates. The insistance on square-edges arose from certain breakages on the clips, which we think have now been overcome by the use of a solid clip, and we therefore suggest that it is no longer necessary to insist on square-edge steel. DA.{Bernard Day - Chassis Design} | ||