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).
Test results page comparing primary/secondary resistances and milli-amperes for various magnetos.
| Identifier | ExFiles\Box 49\5\ Scan181 | |
| Date | 31th July 1922 | |
| Contd. -12- EFC {E. Fowler Clarke - Electrical Engineer} 1/T31.7.22. EO6c appear to be rather poor. This magneto seemed to be somewhat affected for the worse by the endurance test. (18) & (19) Primary and Secondary Resistances ZR.6 .34 ohm and 3230 ohms at 18°C. EO.6 .53 " " 2800 " " 16°C. .ELO6 .73 " " 3980 " " 19°C. (20) Milli-amperes taken by secondary winding at 108 volts A.C. 50~ are as follows :- Magneto. Horizontal position of armature. Vertical position of armature. ZR.6 11.9 7.2 EO6c 15.5 10.3 ELO6 9.9 8.2 EFC. {E. Fowler Clarke - Electrical Engineer} | ||