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 failure of a Vickers B.C.T. exhaust valve spring during a 36-hour test run.
| Identifier | ExFiles\Box 80\3\ scan0239 | |
| Date | 18th July 1912 | |
| Mr Barrington. July 18th. 1912. Re Vickers B.C.T. valve springs We have been running a set of the above on the Test Rig and after 36 hours running one of the exhaust springs has been broken. I attach herewith broken valve spring which I have replacedon the rig and I am continuing the test. E.P. Copy sent to Mr Nadin 19.7.12 with spgs X375 | ||