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 showing a closed circuit primary ampere-speed curve and sparking characteristics.
| Identifier | ExFiles\Box 65\3\ scan0023 | |
| Date | 26th May 1927 guessed | |
| -4- Contd. W (10) Closed circuit primary ampere-speed curve. Speed. Amperes. Speed. Amperes. 200 .93 1200 1.79 300 1.23 1600 1.83 400 1.42 2000 1.85 600 1.61 2400 1.87 800 1.70 2800 1.88 1000 1.76 3200 1.89 3400 1.89 (11) Utility tests. (a) (b) not taken (c) (d) (11a) Speed range :- 700 to 4000 rpm in retard positions only. No sparking at all at other positions. (12) Maximum high speed sparking :- 3400 rpm. (13) Low speed sparking characteristics. Speed :- (a) 165 rpm. (b) 150 rpm. (c) 160 rpm. Contd. | ||