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).
Proposal for modifying the Phantom Weir type slotted induction pipe to improve accessibility and ease of maintenance.
| Identifier | WestWitteringFiles\S\2April1928-June1928\ Scan083 | |
| Date | 12th May 1928 | |
| FROM E.{Mr Elliott - Chief Engineer} HS.{Lord Ernest Hives - Chair}) Copy to BI ORIGINAL PHANTOM WEIR TYPE SLOTTED INDUCTION PIPE. X7070 X7080 X8070 Regarding the above job we have the design in hand, and hope to send it to Derby next week. We propose to raise the carburetter 1" above the standard Phantom position and move it .2" further from the centre line of the engine. The first modification is for: (a) preventing the uptake from being unduly long, (b) allowing of easy dismantling of carburetter. The second allows of the use of a vertical uptake with a 2.25" radius to the bend at the bottom. Instead of having a joint for the uptake at the top we propose to split the uptake opposite the cyl. head joint by a two bolter flange. The flange is quite accessible and can be detached when the head is detached. When decarbonising the head and induction pipe would be lifted off in one piece, while the carburetter would be left behind undisturbed, supported on a suitable semi-flexible sheet/bracket. metal We shall take up these points with R.{Sir Henry Royce} next week. We do not see quite how you are going to deal with induction pipes E.77204. when decarbonising, except by removing the autovac, since the pipe cannot be detached from the cylinder head with the autovac in position. Neither does it appear possible to detach the uptake from the manifold while in position, or to lift the head manifold and uptake in one piece. Do you think it worth while to replace the existing 4 bolter uptake flange by a flange lower down, held together with bolts which can be undone and slipped out, enabling the head and pipes to be lifted as proposed for the weir pipe. This would entail shortening the jacket and modifying the exhaust connection, but we can see no reason why this should not be done. E.{Mr Elliott - Chief Engineer} | ||