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 detailing secondary milliamps, primary point gap, and contact breaker timing.
Identifier | ExFiles\Box 65\3\ scan0167 | |
Date | 18th January 1928 guessed | |
-5- Contd. (14) Secondary milliamps :- Maximum :- 21.2 Minimum :- 5.3 (15) Primary point gap after previous tests :- .010" Primary point gap .006" Contact breaker timing. | Make. | Break. | |---|---| | A | -15° | 99° | | R | 45° | 160° | | | Retard. | Advance. | |---|---|---| | Make. | 40° | -20° | | Break. | 159° | 98° | | Make. | 229° | 169° | | Break. | 342° | 281° | Make ratio:- .64 Primary point gap :- .014" Contact breaker timing. | Make. | Break. | |---|---| | A | -8° | 95.5° | | R | 52° | 156° | | | Retard. | Advance. | |---|---|---| | Make. | 51° | -9° | | Break. | 155° | 95° | | Make. | 233° | 173° | | Break. | 337° | 276° | Make ratio:- .58 Average variation in Break :- ±2° | ||