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).
Examination report on electrical units after a 15,000-mile test in France.
| Identifier | ExFiles\Box 168a\4\ img102 | |
| Date | 2nd December 1938 | |
| 6144 To By.{R.W. Bailey - Chief Engineer} c. to Da.{Bernard Day - Chassis Design} c. to By/RD. c. to Rm{William Robotham - Chief Engineer}/IMD. Rm{William Robotham - Chief Engineer}/RC.{R. Childs}20/JH.2.12.38. EXAMINATION OF ELECTRICAL UNITS AFTER 15,000 MILES TEST IN FRANCE. Instrument board - L.O.P.DB.{Donald Bastow - Suspensions}1834. Direct lighting As fitted to this board, preferred to the existing standard indirect lighting. The board on 9.B.5. is a further improvement in this respect, having one light attached to the steering column. Smith's Dimmer switch gave trouble due to a poor contact between the rotating arm and the resistance element. This caused undue heating on the insulation on the element's former, with a consequent shrinking and also slight charring, allowing a slight movement of the element under the friction of the rotating ars. This should be improved. The A.T. small type rev-counter was tested complete with flexible drive, on the bench, and found to be O.K. The standard A.T. Speedometer was also tested as above, and found to be O.K. The Lucas Ammeter needle sticks. This fault is present on quite a number of these instruments sent for trial, and we cannot recommend them for production. Wiring & Fittings L.O.P.DB.{Donald Bastow - Suspensions}1908. This incorporates the Lucas harness which was found to be in good condition. Rubber protectors should be fitted where the horn cable passes round its bracket. The main battery lead from starter switch to the positive terminal of the battery is not effected by the proximity of the hot exhaust pipe, but had frayed slightly where it passes between the frame and body. | ||