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).
Utility performance curves for standard annular gap and leak of Watford magnetos.
| Identifier | ExFiles\Box 48\2\ Scan302 | |
| Date | 9th July 1925 | |
| UTILITY PERFORMANCE CURVES, OBTAINED ON STANDARD ANNULAR GAP AND LEAK, OF WATFORD MAGNETOS. SPEED (r.p.m.) ANGULAR POSITION OF BREAK WATFORD E6b MAGNETO, NO. 82558 (LARGER AIR GAP) RANGE 63° WATFORD E6b MAGNETO, NO. 77606 (STANDARD) RANGE 60° GENERAL SPECIFICATION LIMITS HEW 9-7-25 ETC 9.7.25. | ||