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).
Different designs and testing procedures for road springs.
| Identifier | WestWitteringFiles\D\April1920\ Scan29 | |
| Date | 1st April 1920 | |
| TO HS.{Lord Ernest Hives - Chair} from R.{Sir Henry Royce} Copy to C.L. [Illegible strikethrough text] ORIGINAL. R10/C19/4/20. 5 DF.V.2628 RE ROAD SPRINGS. X.3922 X.3981 I think it is highly desirable for you to get Mr. Northey - (1) a set of springs of the present design but correctly bedded and polished between the leaves. These would have non-split plate, but sheared ends to the shorter plates. (2) Secondly, after he has had some experience with these, I would like you to change them for a set of the same strength of springs, but reverted to our earlier practice of tapering the ends of the springs in thickness rather than in width. These should be exactly like those we have suggested Firths' should prepare to manufacture. (3) When he has had some experience with these, I would like you to let him have exactly, or actually the same springs fitted with ferodo liners. We do not think the ferodo liners would be altogether successful in the first type of spring, but you might test this on your own. R.{Sir Henry Royce} | ||