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).
Continued description of the Lucas switchbox, battery, and ammeter.
| Identifier | ExFiles\Box 26\2\ Scan042 | |
| Date | 6th October 1919 | |
| R.R. 235 a-100 T(D & F) 246. 6.5.19. O.{Mr Oldham} 2460. Contd. -7- EFC2/T6.10.19. There is also included on the Lucas switchbox a socket connection for an inspection lamp connected between the battery terminals (connections not shewn on diagrams). If it is desired to make use of such a lamp, a standard plug to fit this socket can be obtained from Messrs. Lucas. (c) BATTERY. The battery fitted to the chassis is of Chloride make, type 6 BXE 5, having a capacity of 55 ampere hours at the 10 hour rate. This type of battery has shewn itself by tests to be capable of keeping up a continuous high rate discharge of 120 amperes for a period of 12 minutes. (d) AMMETER. There is provided on the instrument board, a Weston Model 301 moving coil central zero 20.0.20 range ammeter with bold scale and figures. This ammeter is so connected as to indicate all the current that passes either in or out of the battery, except the very heavy current taken to operate the starter motor. It should be noted that this is rather contrary to the usual practice of placing the ammeter in the dynamo circuit so as to indicate what current the dynamo is delivering but if intelligently understood, it will be found to tell us more about the working of the system generally in this position than in the alternative position mentioned. Contd. | ||