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 a Watford EW6 magneto, number 99802.
| Identifier | ExFiles\Box 65\3\ scan0250 | |
| Date | 26th April 1928 | |
| ELECTRICAL EXPERIMENTAL RECORD SHEETS X7791 Watford EW6 magneto No 99802 X.&No:-7791 Date on. | Location. | Date off. | REMARKS. | Miles reading start. | Miles reading finish. | Miles covered. | Total miles. --- | --- | --- | --- | --- | --- | --- | --- 26-8-27 | lab | | Received in lab. | | | | 3-9-27 | ~ | 6-9-27 | Tested to our complete schedule | | | | 6-9-27 | Test Dept (CMX) | | Handed to MX{John H Maddocks - Chief Proving Officer} for Silence tests. | | | | 9-9-27 | " | 10-9-27 | Developed bad knock | | | | 10-9-27 | Makers. | 1-11-27 | Returned to Messrs Norths. | | | | 1-11-27 | 9EX | | Received back and placed on 9EX. | 500 | | | 9-12-27 | " | | | | 2142 | 1642 | 1642 7-1-28 | " | | Bad low speed performance report by testers? | | 3042 | 900 | 2542 6-2-28 | " | 6-3-28 | | | 3660 | 618 | 3160 7-3-28 | lab | | Removed and replaced by another EW6 magneto. | | 4356 | 696 | 3856 12-3-28 | " | 19-3-28 | Production tested OK low speed good. | | | | 22-3-28 | 9EX | | Fitted to 9EX. | 4751 | | | 12-4-28 | " | 26-4-28 | | | 6093 | 1342 | 5198 26-4-28 | lab | | Removed and returned to lab. | | 6731 | 638 | 5836 19.4.28. Returned to Messrs Norths for reconditioning and handed over to Production. | ||