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).
Test results log for Goshawk Ignition Coils, detailing continuity, milliamps, and current measurements.
| Identifier | ExFiles\Box 45\4\ Scan217 | |
| Date | 11th January 1924 | |
| X4079b. X.3604cl. GOSHAWK IGNITION COILS. X.4079b. X.4596. Before encasing. Date. | Coil number. | (1) Secondary continuity. | (2) Secondary milliamps. | (4) O.C.S. test. (amps) | (5) Running current (amps). | (6) | Amps. | Volts. | Ohms. | Remarks. 18.10.23. | TS1 | O.K. | 11.2 at 200 V.{VIENNA} | 1.30 | .901 | 1.63 | 1.44 | .884 | Lamp glows on test 1. 26.10.23. | TS2 | O.K. | 11.9 at 201 V.{VIENNA} | 1.32 | .896 | 1.63 | 1.43 | .878 | Tested on 14.0 mm.gap as spark passed inside on O.C. test. " | TS3 | O.K. | 11.0 at 201 V | 1.29 | .886 | 1.65 | 1.44 | .873 | Slight sparking inside coil on O.C.test. O.K. otherwise. 30.10.23. | TS4 | O.K. | 14.7 at 201 V | 1.33 | .886 | 1.58 | 1.45 | .918 | 18,000 turn coil Cracking noise inside coil on O.C. test. 17.12.23. | TS5 | O.K. | 16.7 at 199 V | 1.15 | .810 | 1.66 | 1.50 | .904 | 18,000 turn coil Slight dis-charge inside coil on O.C.test 11.1.24. | TS6 | O.K. | 14.3 at 199 V | 1.07 | .820 | 1.53 | 1.37 | .896 | 18,000 turn coil 17.12.23. | TR{Capt. F. W. Turner - Finance}1. | O.K. | 16.1 at 199 V | 1.20 | .820 | 1.50 | 1.34 | .894 | Modn.18,000 turn coil. Slight discharge in-side coil. | ||