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).
Record of tests, modifications, and performance for a specific tall coil.
| Identifier | ExFiles\Box 45\4\ Scan224 | |
| Date | 17th January 1924 | |
| TALL COIL RECORD. Coil No. 4.T.G.3. X. No. 4079 Date. | Service on. | If on car miles run. | If on test notes re use. | Total miles run. | Remarks re performance. 12-3-23 | Received. | — | — | — | In mouldensite case. 17-3-23 | Bench tests. | — | Production tests. | — | Weakened on OC test. Retd for repair. 27-3-23 | Bench tests. | — | Production tests. | — | Still weak after repair. Max gap 5.7m/m.{Mr Moon / Mr Moore} 9-4-23 | Retd to Production | — | — | — | Retd to N. Brook as faulty. 7-5-23 | Bench tests. | — | Prod' tests and quantities obtained. | — | Rec'd from production. Coil rewound. 17-7-23 | Retd to Production | — | — | — | Retd to be filled into Redmanol case. 18-7-23 | On 6 G II | 5,319 | — | 5,319. | Replaced std coil on 6 G II. 18-10-23 | 6H | - | - | - | Replaced by T S I coil. 17-1-24 | Lab. | Superseded by .25" taller coil of 18,000 turns. | ||