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).
Specifications for wiring for centre lamps or double bulb headlamps.
| Identifier | ExFiles\Box 168b\2\ img209 | |
| Date | 2nd August 1930 | |
| X-7560 To E.P. from E.F.C. EFC3/ADL 2.8.30. X.7560. EXTRA WIRING FOR CENTRE LAMPS OR DOUBLE BULB HEADLAMPS. Referring to the attached note and samples, in my opinion neither wire is properly suitable for the purpose mentioned. A wire incorporating the good features of both samples would, I consider, be O.K. without armouring or tubing. For example :- (1) The core should be at least of the size of that of the thicker sample. (2) The rubber or maconite insulation should be also as thick as that of the larger sample. (3) The final covering should be similar to that of the smaller sample viz. cellulose lacquered cambric. E.F.C. | ||