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).
Failures of 20 HP road spring leaves observed during a 10,000-mile test.
| Identifier | ExFiles\Box 4\9\ 09-page160 | |
| Date | 14th September 1925 | |
| 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} X 5340 Hs{Lord Ernest Hives - Chair}6/LG14.9.25. 20 HP. ROAD SPRINGS. X 5340 Attached herewith are sketches of failures of spring leaves observed during 10,000 miles test on 9-G-111 in France. It will be noted that the fractures always start on thetop side of the plate - fractures also start from the outside edges. Except for top leaves, the failures nearly always occur close to the spring clips. Hs.{Lord Ernest Hives - Chair} | ||