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).
Request to change a component's clearance to an interference fit and to create a sample for testing.
| Identifier | ExFiles\Box 152\2\ scan0177 | |
| Date | 16th February 1940 guessed | |
| - 2 - The clearance cold is now .0015" and we consider that this should be altered to an interference of .003" - .004". We should be glad if you would make us a sealing piece to this dimension so that we can try it. If this interference is too much for assembly we can reduce it until it will go in. An official order will follow. Yours faithfully, | ||