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).
Bench testing of a Bijur charging dynamo and proposals for alternative testing equipment.
| Identifier | ExFiles\Box 34\4\ Scan004 | |
| Date | 19th January 1918 | |
| (S.D. 408. 26-4-17.) Bm. 2/156/13. To R.{Sir Henry Royce} from EFC. e.{Mr Elliott - Chief Engineer} to BJ. X.2048 RE CHARGING DYNAMO AND TESTING SET. With reference to your enquiries concerning the above we have recently taken the Bijur set off the 49 G.B. and have conducted a bench test on this with the regulator removed to the outside and re-connected. At the present moment we are replacing this and shall run the dynamo again on the bench with the regulator in position to see if the performance is essentially the same. The report on this test you will receive in due course. The voltage of this set is normally 6, but we think [handwritten] possibly [/handwritten] perhaps it may be made to run at 18 volts by altering the spring on the vibrator regulator, and we will, when running the dynamo again, see what can be done in this way. Mr. Hives suggests that as he has no intention of replacing this set on 49 G.B. (because we want ultimately [handwritten] be [/handwritten] to have on 49 G.B. such a set as will/standard for after the War, and with this end in view he proposes trying the Lucas set [handwritten] on the car [/handwritten]) that it might be suitable for your purposes. This however we will ascertain. As regards your enquiry for a testing set, we think that for your purposes the right thing to do would be to obtain a small Weston moving coil direct reading milli-voltmeter, and then we could make up for you the necessary set of shunts and series resistances to enable you to cover the range 0 to 15 volts and 0 to 15 amperes. We are just expecting back from Messrs. Weston's our NEW own special mill-voltmeter Contd. | ||