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).
Experiments on the Phantom battery, including different separators and configurations.
| Identifier | ExFiles\Box 54\2\ Scan090 | |
| Date | 28th May 1926 | |
| X4617 To R. {Sir Henry Royce} from EFC. {E. Fowler Clarke - Electrical Engineer} c. BJ. PN. {Mr Northey} c. Ds. E. {Mr Elliott - Chief Engineer} EFC {E. Fowler Clarke - Electrical Engineer} 3/T28.5.26. RE PHANTOM BATTERY. VBS39 X4617 Reference your R8/M4.5.26 we understand that a scheme for the separation of the battery into two portions is in progress, and that 7-EX will be duly instructed to be so fitted. With reference to your last paragraph, it is understood that you would wish us to continue experiments with experimental Exide and P & R batteries with minor variations from standard which we have on hand at the present moment, namely - (1) Variations in the types of grids. (2) Variations in the separators, in particular trials of batteries with threaded rubber separators. We have a P & R battery with threaded rubber separators (otherwise standard) and we are just in receipt of an Exide battery similarly fitted. So far we do not consider that we have found a 'snag' in threaded rubbers separators. We are desirous of making battery life tests of such separators, as we think there is a possibility of there giving a better result than the combined wood and ebonite, in our types of battery. We have already some amount of evidence in this direction. A fuller report will be made at a later date. EFC. {E. Fowler Clarke - Electrical Engineer} | ||