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).
Diagrams illustrating the four firing positions of a four-cylinder magneto.
| Identifier | ExFiles\Box 4\5\ 05-page042 | |
| Date | 9th November 1912 | |
| THE AUTOCAR, November 9th, 1912. 927 TERMINALS REVOLVING BRUSH HOLDER VULCANITE BASE BRASS SEGMENT ROCKER Fig. 18.—Magneto with distributor and contact breaker covers removed. One brass distributor segment is hidden by the brush holder, which is in position for firing cylinder No. 1. The rocker end is on the top cam. BRUSH HOLDER ROCKER Fig. 20.—Cylinder No. 3 firing. ROCKER Fig. 19.—Segment at cylinder No. 4 receiving the current. Compare position of contact breaker rocker with other views. ROCKER Fig. 21.—Cylinder No. 2 firing. THE FOUR FIRING POSITIONS IN THE CYCLE OF THE MAGNETO. In each of the views the platinum points of the contact breaker lever are apart, but so little separated that the space between them is hardly discernible. | ||