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).
Potential trouble with the 4-port pipe system on the 20/25 model, requesting an investigation into sliding joints.
| Identifier | ExFiles\Box 102\1\ scan0362 | |
| Date | 9th July 1935 | |
| X508 To RHC.{R. H. Coverley - Production Engineer} Hs{Lord Ernest Hives - Chair}/Rm.{William Robotham - Chief Engineer}18/KW.9.7.35. We anticipate that we may have trouble with the existing pipe on the 4-port system on the 20/25. We should like you to look into the question of getting sliding joints on the main branches as indicated in LeC.2896/7, as these were quite successful on the 20/25 and Phantom. Actually the Invar rod was not found to be necessary. Hs{Lord Ernest Hives - Chair}/Rm.{William Robotham - Chief Engineer} | ||