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).
Testing alternative materials like malleable iron, bronze, and aluminium for components, and the design of an exhaust pipe nozzle.
| Identifier | ExFiles\Box 38\4\ Scan020 | |
| Date | 15th May 1920 | |
| Contd. -2- mechanical strength and this is very important. I believe also it would be quite satisfactory in malleable iron, and might even be satisfactory in aluminium, and Mr. Hives was asked to get a pair of feet as aluminium castings, and test them on the bumping rig. It would make a very good guide as to the reserve of strength or otherwise, so that we have as an alternative from the steel castings for this purpose. - (1) A malleable iron casting. (2) A bronze casting. (3) An aluminium casting. all of which could be tested, but we thought that the best proposition would be the system of making these as drop forgings, as described, and which have been put in hand. X3419 As regards the exhaust pipe nozzle, this has from time to time been made by various methods, two of which are immediately available, i.e. a sheet steel pressing or a thin casting in brazing metal alloy. This might be tested as an aluminium casting providing it can be fixed to a simple flange which could be brazed on the end of the pipe or fitted tightly on the end of the pipe. The best idea, however, was that which had been previously suggested and which strange to say, the model was on 1.EX , the car used by me at West WitteringHenry Royce's home town. This model was constructed from two sheet steel pressing of quite a simple form welded together, and welded to the end of the exhaust pipe. Several methods were suggested of making this fitting still more possible than in the previous Cont. | ||