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).
New wiring scheme and distributing board design for the 6 EX model.
| Identifier | ExFiles\Box 61\2\ scan0392 | |
| Date | 6th September 1920 | |
| X.2515 To EPC. from R.{Sir Henry Royce} c. to CJ. c. to EN. c. to HS.{Lord Ernest Hives - Chair} X.3555. c. to DA.{Bernard Day - Chassis Design} X.3659. c. to BY.{R.W. Bailey - Chief Engineer} X.3923b. RE WIRING SCHEME -EFC2/13.9.20. R7/G6.9.20. X.3129. X.2515. We have now sent you for 6 EX a complete design for the distributing board which it is intended to be fitted to the engine side of the dashboard on the right hand (i.e. driver's) side. This provides a fuse for all the outgoing circuits and also a fuse to earth for the battery ignition. We have sent you also, a diagram of the wiring which shews exactly where the connections should go. You will observe that there is only one connection between the earth (frame) and the electrical installation, and that is through the rotating contact maker of the battery ignition, and for track through a fuse shewn on the distributing board. This will result in a very complete and satisfactory installation, as should there be any earth connection and the fuse of the circuit not blow, the earth fuses belonging to the battery ignition will blow, in which case the only circuit to be interrupted will be that of the battery ignition. Should this fuse repeatedly blow, a test of the insulation of the various circuits would have to be made, but when this fuse is removed, and the battery ignition switched off, the whole installation should be free from any frame contact. I am sure that everybody will agree that this scheme is the best of any that we have come across. It will be noticed that all the switches and fuses are close up against Contd. | ||