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).
Curve showing the variation of D.C. volts with cam lever position for a Watford Edge Magneto No. 7947C.
| Identifier | ExFiles\Box 4\5\ 05-page362 | |
| Date | 1st January 1928 | |
| WATFORD EDge MAGNETO No 7947C CURVE SHOWING VARIATION OF D.C. VOLTS WITH CAM LEVER POSITION. NOTE. SLEEVES RIGIDLY CONNECTED TO LEVER. Y-Axis Label: VOLTS X-Axis Label: LEVER POSITION. X-Axis Markings: ADVANCE, 15°, 20°, 30°, 40°, 50°, RETARD Y-Axis Markings: 7.0 Curve Annotation: POSITION OF MAXIMUM FLUX THROUGH ARMATURE Reference Text (bottom right): S.R. No. 43/28 | ||