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).
Testing of front springs from two different manufacturers, Firth and Woodhead.
| Identifier | ExFiles\Box 119\2\ scan0213 | |
| Date | 16th October 1924 | |
| To Hs.{Lord Ernest Hives - Chair} from R.{Sir Henry Royce} c. to CJ. DA.{Bernard Day - Chassis Design} BY.{R.W. Bailey - Chief Engineer} X1331 R1/M16.10.24. RE. FRONT SPRINGS. X.2628 X.1331 X.9410 My idea of testing the exact strength and design of spring that we were going to use without insisting upon either make was that I understood it was difficult to obtain satisfactory Firth springs in time. Naturally I should prefer the exact strength, design and make, that we intended to fit. I therefore agree with Mr. Johnson, and only point out that Firths and Woodheads springs could be compared relatively on the bump test. Mr. Johnson will kindly decide to what circumstances we shall bend i.e. (1) waiting for Firths or (2) testing Woodhead and carefully comparing - any-way we shall not be content unless Firths equal Woodheads on the bump test. MADE AT CROXLEY R.{Sir Henry Royce} | ||