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 and service record for a specific Tall Coil, detailing its mileage, usage, and performance remarks.
| Identifier | ExFiles\Box 45\4\ Scan222 | |
| Date | 27th March 1923 | |
| TALL COIL RECORD Coil No. 1TG3 X. No. 4079 Date. | Service on. | If on car miles run. | If on test notes re use. | Total miles run. | Remarks re performance. 23-1-23 | On 4GII | 466 | — | 466 | Put straight on car without test. In moulderite case. 5-2-23 | Bench test | — | General test | — | Returned as faulty; tested and found OK electrically. Case slightly damaged. Retnd for repairs to case. 28-2-23 | Received and bench tested. | — | Production tests | — | Broke down on O.C. test. Returned for repair. 10-3-23 | Received and bench tested. | — | Production tests and quantities obtained. | — | O.K. 12-3-23 | On 5GII | — | — | No record | Sent to Mr. Elliott for 5GII. No record kept by test house while car was at W. Wittering. 19-7-23 | Taken off. | — | — | — | Sent to production to be fitted into case of Redmanol material. 21-7-23 | On 4GII | — | — | — | 24-7-23 | " | — | Heating test carried out on road. | 2,673 | Heating test on road with external gap. Gap had to be reduced from .080" to .030". 15-9-23 | In lab. | — | — | — | Replaced by std coil as car going to Mr. Royce. 17-1-24 | | | | | 27.3.23. Superseded by .25" taller coil of 18,000 turns. | ||