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).
Arrangement, specifications, and wiring of lamps for the 12-G-4 vehicle model.
| Identifier | ExFiles\Box 40\2\ Scan041 | |
| Date | 17th July 1928 | |
| Hs.{Lord Ernest Hives - Chair} from Ev.{Ivan Evernden - coachwork} c. to BY.{R.W. Bailey - Chief Engineer} BJ. CWB. Y4449 EV{Ivan Evernden - coachwork}1/17.7.28. RE. LAMPS FOR 12-G-4 X.4449 X.5800 We send herewith N.sch.2656 shewing the arrangements of the headlamps which Mr. Royce wishes fitted to 12-G-4 All the lamps have semi-matt black finish. Wing lamps - Chrysler type with rear red lights obscured. Head lamps - Lucas RG.{Mr Rowledge}71. Centre lamp - Stephan Grebel 180 mm. permanently dipped and twisted. A two-way switch throws either the head or the centre lamp into action. The main switch cuts out both. We have sent to you a Bosch switch for the sloping footboard. We have indicated as an alternative a two-way switch on the instrument board, but so far have been unable to procure a suitable one. The Lucas dimming switch could be modified to perform the function. We feel that the instrument board switch is likely to be preferred. The head lamp brackets are those we have sent you for the present 'twenty'. Owing to the smaller wings and lamps will come wider apart than on N.sch.2633. We indicate the wiring we wish to use. We do not like the present scheme as it does not allow the wing to be taken off without pulling the wires out of the wing-stay. We would like the scheme indicated here and already in use on Phantom to be adopted for the '20' as soon as possible. We were under the impression that we had done something in this direction. For the other two India 3 cars we shall be send you a complete design for the headlamps and dippers. DA{Bernard Day - Chassis Design}/EV.{Ivan Evernden - coachwork} | ||