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).
Experimental bench tests and manufacturing instructions for Goshawk battery ignition coils.
| Identifier | ExFiles\Box 45\4\ Scan012 | |
| Date | 15th March 1922 | |
| To By.{R.W. Bailey - Chief Engineer} from EFC. c. By/WER. c. Mr. Brock. X4079.a EFC1/T15.3.22. X.4079 - GOSHAWK BATTERY IGNITION COILS. We are satisfied from experimental bench tests of one of the coils received, made up to instructions contained in By/WER9/EF28.2.22, and By/WER2/EF3.3.22, that this arrangement of the coil is better than the present arrangement, to which 6 coils have been made, and therefore think that further coils should now be made up in this manner. I notice that Mr. Robinson has instructed that four coils should be made. We consider that these other coils should be completed and then the previous half dozen coils converted, if expedient, to this new arrangement of winding. EFC. | ||