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).
High and low speed sparking characteristics and the flinging of the contact breaker.
| Identifier | ExFiles\Box 48\2\ Scan158 | |
| Date | 21th August 1924 guessed | |
| -5- (15) High speed sparking characteristics :- OK. (16) Low speed sparking characteristics :- Speeds :- (a) 160 rpm (b) 220 " (c) 290 " (17) Flinging of contact breaker at high speed :- Contd. | ||