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 for a closed circuit primary ampere-speed curve, speed range and sparking characteristics.
| Identifier | ExFiles\Box 65\3\ scan0079 | |
| Date | 3rd September 1927 guessed | |
| -5- Contd. (10) Closed circuit primary ampere-speed curve. Speed. Amperes. Speed. Amperes. 100 .72 1600 2.63 200 1.25 2000 2.68 300 1.60 2400 2.72 400 1.93 2800 2.75 600 2.20 3200 2.77 800 2.36 3400 2.78 1200 2.50 (11) Utility tests. (a) (b) (c) (This section is crossed out) (11a) Speed range :- 400 to 5000 Retard 600 to 4500 Central 750 to 1800 15° from advance Sparking irregular at full advance (12) Maximum high speed sparking :- 5000 rpm. (13) Low speed sparking characteristics. Speed :- (a) 80 rpm (b) 120 rpm (c) 145 rpm Contd. | ||