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).
To Mr. Swetnam to investigate making the exhaust pipes straight instead of bent.
| Identifier | ExFiles\Box 152\3\ scan0003 | |
| Date | 5th October 1911 | |
| N7/B51011. 5th October 1911 Mr. Swetnam 5-10-11 Will you please investigate as to whether the exhaust pipes running from the malleable iron box into the first silencer below the crankchamber, cannot be made perfectly straight, instead of bent as at present. x 442 | ||