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).
Photograph of a chain driven camshaft with failure test results.
| Identifier | ExFiles\Box 124\1\ scan0246 | |
| Date | 21th August 1939 guessed | |
| B.60.No.1 Unit - Chain Driven Camshaft. 15 links failed after 14 hours 30 mins of which 7 hours were full throttle. | ||