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).
Electrical experimental record sheet for mileage and performance tests on Morganite Brushes, part number EG 6630.
| Identifier | ExFiles\Box 62\3\ scan0253 | |
| Date | 20th March 1931 | |
| X6060 ELECTRICAL EXPERIMENTAL RECORD SHEETS. X. No: - 8673 Morganite Brushes. EG 6630 | Date on | Location | Date off | REMARKS. | Miles reading start. | Miles reading finish. | Miles covered. | Total miles. | |----------|----------|----------|------------------------------------------------------------------------------------------------------|----------------------|-----------------------|----------------|--------------| | 1-11-2 | Lab. | 2-2-28 | Special grade of Morgan brush having maximum amount of lubricant without being impregnated. Bench tested & refitted PD17 / 2-2-28 | — | — | — | — | | 2-2-28 | Lab. | 8-2-30 | Fitted to 357 for car test. | — | — | — | — | | 8-2-30 | Shop. | 19-2-30 | Handed over to shop for engine of 23EX | — | — | — | — | | 19-2-30 | 23 EX. | 24-3-30 | Run on engine on test bed. | 22,144 | 22,341 | 191 | 191 | | 24-3-30 | Lab. | 2-4-30 | Reading taken. Machine replaced by dynamo I.O.M. | — | — | — | — | | 2-4-30 | 19 Ex | 29-4-30 | Fitted to 19 Ex. Taken off. | 20,082 | 21,548 | 1,466 | 1,657 | | 29-4-30 | Shop. | 27-5-30 | Sent into shop to be fitted to 22Ex | — | — | — | — | | 27-5-30 | 22 EX | 9-7-30 | Dynamo removed from car. | 27,976 | 29,725 | 1,749 | 3,406 | | 9-7-30 | Lab. | 13-8-30 | | — | — | — | — | | 13-8-30 | 19 Ex | 13-10-30 | Put on 19 Ex. | 6,775 | 8,817 | 2,042 | 5,448 | | 13-10-30 | 19 Ex | 1-11-30 | Reading taken. | 8,817 | 9,900 | 1,083 | 6,531 | | 1-11-30 | 19 Ex | 1-12-30 | Reading taken. | 9,900 | 10,793 | 893 | 7,424 | | 1-12-30 | 19 Ex | 1-1-31 | Reading taken. | 10,793 | 13,148 | 2,355 | 9,779 | | 1-1-31 | 19 Ex | 2-3-31 | Reading taken. | 13,148 | 14,533 | 1,385 | 11,164 | | 2-3-31 | Lab. | 20-3-31 | | — | — | — | — | | ||