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).
Technical memorandum discussing the design and sourcing of various electrical components, including bearings and a fuse board unit.
| Identifier | ExFiles\Box 168a\4\ img020 | |
| Date | 14th June 1937 guessed | |
| (2) armature we might use is the spindle which would overcome the difficulty of the nurling operation, but this is subject to obtaining a spindle which is suitable for the water pump drive coupling on the rear end. We propose to use the magnet case, pole pieces and field windings complete, and also the brush gear, but since the end brackets will be in aluminium it is likely they will have to be produced at these works. This magnet case will be we anticipate of the bi-polar type now being developed by Lucas in the 5" size. With further reference to the field windings, it should be made clear that the present Lucas 4 pole winding does not reach our performance, but that Lucas' anticipate satisfying us on the two pole machine. Bearings. With regard to the dynamo bearings, we are doubtful if the Lucas system of using a single cone ball bearing on the front end with an Oilite bush on the tail end will stand up to our conditions, but this can be the subject of test. Fuse board Unit. Messrs. Lucas are about to produce a new fuseboard unit in which the cutout and regulator, together with half a dozen fuses are mounted on an independent base which is carried on a sub-base having the permanent wiring connections. In our revision of the fusing system we think that half a dozen fuses will be sufficient for our purposes plus the small auxiliary fuses which are used where required, and that this particular arrangement would fit in our requirements if provided with the Ross Courtney terminal posts in place of the guillotine type normally used by Lucas'. We understood that this conversion is quite easy for them to make and that they would be prepared to supply the fuse board units so equipped. With the reduced number of fuses contemplated we should still provide independently fused headlamps as a safety measure but we should delete the armature and field fuses for | ||