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).
Experimental record sheet for tests on Morganite Brushes HM.5.
| Identifier | ExFiles\Box 62\3\ scan0256 | |
| Date | 15th October 1930 | |
| X6066 ELECTRICAL EXPERIMENTAL RECORD SHEETS Date:- 15-10-30. x8673. Morganite Brushes. HM.{Capt. W. Hallam - Head Repairs}5. | Date on. | Location. | Date off. | REMARKS. | Miles reading Start. | Miles reading Finish | Miles covered | Total miles. | |---|---|---|---|---|---|---|---| | 15-10-30. | 23 Ex | 1-11-30 | Fitted to dynamo 2.265.HO Heating & Prod's tests. Springs O.K. Dynamo put on 23Ex. Dynamo removed on 23 Ex stored preparatory to being sold. | 30,431 | 31,709 | 1,278 | 1,278 | | 11-12-30 | 20 Ex | 1-1-31 | Fitted to 20 Ex without two-rate switching scheme. Brushes & comm in excellent condition, no blackening. Readings taken. | 22,533 | 22,755 | 222 | 1,500 | | 1-1-31 | " | 4-2-31 | " | 22,755 | 23,095 | 340 | 1,840 | | 4-2-31 | " | 2-3-31 | " | 23,095 | 24,275 | 1,180 | 3,020 | | 2-3-31 | " | 13-4-31 | " | 24,275 | 25,910 | 1,635 | 4,655 | | 13-4-31 | " | 1-5-31 | " | 25,910 | 26,104 | 194 | 4,849 | | 1-5-31 | " | 5-6-31 | " | 26,104 | 27,542 | 1,438 | 6,287 | | 5-6-31 | " | 4-7-31 | " | 27,542 | 29,427 | 1,885 | 8,172 | | 4-7-31 | " | 1-8-31 | " | 29,427 | 34,351 | 4,924 | 13,096 | | 1-9-31 | " | 6-10-31 | " | 34,351 | 36,407 | 2,056 | 15,152 | | 6-10-31 | " | 9-11-31 | " | 36,407 | 37,915 | 1,508 | 16,660 | | 9-11-31 | " | 15-12-31 | " | 37,915 | 39,706 | 1,791 | 18,451 | | 15-12-31 | " | 1-1-32 | " | 39,706 | 39,710 | 4 | 18,455 | | 1-1-32 | " | 1-2-32 | " | 39,710 | 40,528 | 818 | 19,273 | | 1-2-32 | " | 12-2-32 | Dynamo removed. | 40,528 | 41,130 | 602 | 19,875 | | ||