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).
Service and performance record for a tall coil, model LG1.
| Identifier | ExFiles\Box 45\4\ Scan218 | |
| Date | 27th March 1923 | |
| TALL COIL RECORD X 4079 Coil No. LG1 X. No. 4079 Date. | Service on. | If on car miles run. | If on test Notes re use. | Total miles run. | Remarks re performance. 6-1-23 | Received. | — | — | — | — 7-1-23 | Bench Test | — | General test | — | Tests for continuity of winding and sparking. O.K. 8-1-23 | Test House | No record. | — | — | For test bed. 12-3-23 | On 6 G II | 3,531 | — | 3,531 | — 8-5-23 | In lab. | — | — | — | Chassis in shop. 14-5-23 | On 3 G II | 2,936 | — | 2,936 | Replaced LG2 which broke down. 8-6-23 | Off 3 G II | — | — | — | Still in the test house. Retained as a spare. 17-1-24 | Superseded by .25" taller coil of 18,000 turns. X4079 27. 3. 23 | ||