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).
Two design proposals, types 'A' and 'B', for the 'Eagle' engine's cylinder expansion water jackets.
| Identifier | WestWitteringFiles\E\June1920\ Scan31 | |
| Date | 19th June 1920 | |
| To DHW from E.{Mr Elliott - Chief Engineer} Copy to CJ. " " RM{William Robotham - Chief Engineer} " " ITS " " EPC. " " ET. X.4145 RE "EAGLE" CYLINDER EXPANSION WATER JACKETS. E1/G19/6/20. RECEIVED 21 JUN 1920 X.2437 ORIGINAL. We send you herewith drawing No. Lec.1247 shewing two styles of expansion water jackets for the "Eagle" engine, "A" and "B". Type "A" has a split gland joint with rubber packing ring for application to existing completed cylinders. Type "B" shews a solid drawn bellows tube expansion sleeve for application to new and incomplete cylinders. In the case of the former the existing sleeve should be machined away at the ring of metal carrying the lower end of the jacket so as to cut the jacket free from the cylinder barrel, the outside and end of the jacket having previously been trimmed up to take the upper member of the gland; this latter is then sweated into position. Referring to type "B", it would be necessary to obtain a solid drawn sleeve of metal made like a cartridge tube, and then spun for the purpose of forming the expansion diaphragms. It should be easier to make this piece in copper or brass than in steel, and Mr. Royce considers it quite permissible to use copper or brass if it is found possible to make a welded joint between copper and steel sheet metal. He would like this latter point investigated as soon as possible at the Works. To facilitate the manufacture of the sleeve, it has been made with a shorter nozzle for the water inlet connection than is used on the existing jackets. Mr. Royce considers that you will probably find it | ||