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).
The 10,000-mile endurance test of Woodhead thin leaf springs in France.
| Identifier | ExFiles\Box 72\3\ scan0214 | |
| Date | 30th November 1924 | |
| R.R. 493A (20H) (D.A. 652 20-9-24) J.H.D. EXPERIMENTAL REPORT. x9410 Expl. No. 9410 REF: Hs{Lord Ernest Hives - Chair}3/LGS 30.11.24. To R.{Sir Henry Royce} from Hs.{Lord Ernest Hives - Chair} c. to CJ. BJ. c. to RG.{Mr Rowledge} E.{Mr Elliott - Chief Engineer} c. to DA.{Bernard Day - Chassis Design} BY.{R.W. Bailey - Chief Engineer} c. to WOr.{Arthur Wormald - General Works Manager} TESTS WITH 12½% THIN LEAF WOODHEAD SPRINGS IN FRANCE. x4479 The car in France has now completed 10,000 miles fitted with the 12½% Woodhead springs on the front. The one failure has been the bottom leaf on the N.S. spring which broke after 7,100 miles. The broken leaf was replaced with another bottom leaf taken off a spare spring; the test was continued and the 10,000 miles were completed without further failure. It was reported after 2,000 miles that the clearance between the buffer and the spring had got less, indicating that the springs had lost some of their initial camber. Since then, records were taken and no further alteration has taken place. We can check the initial camber when the car returns. We are expecting to start running in France immediately with a pair of the latest 12½% springs made by Messrs. Firths. Hs.{Lord Ernest Hives - Chair} | ||