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 a sequence starter motor detailing tests, faults, repairs, and mileage.
| Identifier | ExFiles\Box 64\1\ scan0286 | |
| Date | 17th March 1927 | |
| C. Subsequently C2 ELECTRICAL EXPERIMENTAL RECORD SHEETS. X. No:- 8620 Sequence Starter motor Date on. | Location. | Date off. | REMARKS. | Miles reading Start. | Miles reading finish. | Miles covered. | Total miles 23-5-25 | Lab. | 25-5-25 | Recd from shop. For particulars see report PC 94/25-5-25. Brushes N. 25-5-25 | " | 4-6-25 | Test (2) by G.J. 7-7-25 | " | 16-7-25 | Test 2 by S.P. 16-7-25 | " | 18-8-25 | Test 3 by S.P. Motor failed. Tested, and insulation to carcase found to be faulty. 18-8-25 | " | 26-8-25 | Also oil leaked from gear into carcase. Armature drop tested and found to be faulty. (Coils shorting at rear end). 26-8-25 | Shop. | 7-9-25 | Sent for repair. Armature rewound. 7-9-25 | Lab. | 3-10-25 | Recd. from shop. See PC 99/23-9-25. Brushes N. Tests 1+3 (3 on teaser as well), +5 (SP{Mr Spinney}) 29-10-25 | " | 31-10-25 | Tested in conjunction with Armito on bench. 47 ft.lbs 31-10-25 | 9 EX. | 12-11-25 | Sent into shop for fitting to a car. | 0 | 20 | 20 | 20 12-11-25 | " | 2-1-26 | Reading taken. Speedometer changed. Speedometer again changed. | 8,261 | 8,877 | 616 | 636 2-1-26 | " | | Reading taken. | 0 | 1,428 | 1,428 | 2,064 2-2-26 | " | 27-2-26 | Reading taken. | | 2,261 | 833 | 2,897 27-2-26 | " | | Taken off as main switch failed but put back immediately. | | 2,895 | 634 | 3,531 7-4-26 | " | 13-7-26 | | | 4034 | 4670 | 13-7-26 | lab | | Removed & returned. to lab | 4759 | 5395 | | 5395 13-7-26 | shop. | 4-3-27 | Used for testing Scheme NO.2. (Preliminary) main winding arranged two series two parallel 4-3-27 | lab | 12-3-27 | and modified gears with 5° spiral 12-3-27 | shop | 17-3-27 | Field winding developed faulty 17-3-27 | lab | | sent to shop for repair. returned and retested. Neutral point checked. (NEW) | ||