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 report for Goshawk Ignition Coils, detailing various electrical measurements.
| Identifier | ExFiles\Box 45\4\ Scan011 | |
| Date | 14th March 1922 | |
| X.3604cl. GOSHAWK IGNITION COILS. X.4079. Coil Number. | (1) Secondary continuity | (2) Secondary milli-amps. | (4) @ C.S. Test. | (5) Running current (amps). | Amperes. | Volts. | Ohms. | Remarks. S.B. 1. | O.K. | — | — | — | — | — | — | different type tested S.B. 4. | O.K. | 11.6 at 202V | O.K. | 1.02 | 1.6 | — | — | S.B. 5. | O.K. | 10.5 at 203V | Primary current 1.35a O.K. | 1.08 | 1.6 | 1.1 | .688 | S.B. 6. | O.K. | 11.8 at 203V | Prim current 1.35a O.K. | 1.08 | 1.5 | 1.08 | 720 | S.B. 7. | O.K. | 13.5 at 203V | 1.33a O.K. | 1.08 | 1.5 | 1.1 | 734 | S.B. 8. | O.K. | 11.8 at 202V | 1.32 amp O.K. | 1.02 | 1.5 | 1.05 | 701 | S.B. 9. | O.K. | 11.7 at 202V | 1.32 amp O.K. | 1.0 | 1.5 | 1.05 | 701 | S.B. 10. | O.K. | 11.6 at 202V | 1.35a at 12.8V 1.35 amp | 1.05 amp at 8.45 V.{VIENNA} | 1.55 | 1.1 | 710 | S.B. 11. | O.K. | 11.8 at 203V | 1.35a at 12.8V | 1.08 amp. at 8.5 V.{VIENNA} | 1.55 | 1.1 | 710 | S.B. 12. | O.K. | 11.8 at 202V | 1.35a at 13.0V | 1.07 amp at 8.5 V.{VIENNA} | 1.57 | 1.1 | 701 | X4079 14.3.22. | ||