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).
Test and failure log for valve springs, part number C916.
| Identifier | ExFiles\Box 80\3\ scan0237 | |
| Date | 8th May 1912 | |
| R.R. 512 (2½ H) (X. 435. 14.12.11) G.{Mr Griffiths - Chief Accountant / Mr Gnapp} 2227. X375- Section 600.604 Description: Valve Springs. C916. Left Column: Date: 8/5/12, Report: Sheet from Office G.{Mr Griffiths - Chief Accountant / Mr Gnapp} Test - made from BCT steel by Vickers. Date: 8/5/12, Report: Fetched springs. Date: 10/5/12, Report: No 3 exhaust broke after 12 hrs running. no 10 exhaust broke 12 hrs running. no 1 exh broke 33 hrs running. no 12. exco. broke 37 hrs running. no 1. inlet. broke after 9 1/2 hrs running. Reported by G.O. to be wrong material more fettled. Right Column: Report: New set of springs received. Whs initialed to test 30. piece no C916 collar. E7689. Date: 12-7-12, Report: Received springs at Expcl dept. Bowen testing. Date: 16-7-12, Report: 1 Exhaust broken after 36 hrs running. Date: 18-7-12, Report: Reported mr Barrington. Date: 26-7-12, Report: Reported " ". | ||