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).
Standardisation of batteries and comparing three types for the Goshawk.
| Identifier | WestWitteringFiles\H\March1922\ Scan28 | |
| Date | 8th February 1922 guessed | |
| To R & E.{Mr Elliott - Chief Engineer} -3- EPC1/TB.2.22 (Contd). We have, therefore, at the moment a favourable opportunity for standardising another type of battery, and as it has been decided that two simultaneous standards should be adopted, and we can recommend the adoption of the P & R B.D.W.11 on the one hand and this new Exide 6-XHR-6 on the other, we suggest that standardisation sheets to this effect be prepared and submitted forthwith with a view to the adoption of these two designs. These Exide batteries would probably of course, necessitate new battery boxes and there would be no battery box scrap. Before circulating the standardisation sheets we would like Mr. Royce to say that he agrees to this course. Goshawk Batteries. Three makes of battery are under consideration for the Goshawk :- (1) P & R type B.DW.7 - 65 lbs, or alternatively, P & R.{Sir Henry Royce} R.D.W.9 - 68lbs. (2) C.A.V.Willard type 12-XR-2 - 66 1/4 lbs. (3) Exide 6-XHR3, sample of which has been submitted to us yesterday in accordance with letter from Chloride Company attached. Weight 61 lbs. Comparative high rate discharge curves of these batteries are shown on sheet M, but those of the P & R may improve a little with use. The C.A.V.Willard type gives good results at first but it is said that the separators choke up in time and increase the internal resistance. This we have not experienced | ||