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 report continuation page detailing closed circuit primary ampere-speed curve, speed range, and sparking characteristics.
| Identifier | ExFiles\Box 65\3\ scan0065 | |
| Date | 23th August 1927 guessed | |
| -5- Contd. (10) Closed circuit primary ampere-speed curve. Speed. Amperes. Speed. Amperes. 100 .72 1600 2.60 200 1.12 2000 2.68 300 1.51 2400 2.72 400 1.81 2800 2.74 600 2.12 3200 2.75 800 2.32 3400 2.75 1200 2.48 (11) Utility tests. (a) Not taken. (b) (c) (11a) Speed range :- 300 to 4000 (and over) rpm. Retard 650 to 3800 rpm Central 750 to 3500 " 15° from Full Advance (12) Maximum high speed sparking :- No regular sparking at " " considerably over 4000 rpm. (13) Low speed sparking characteristics. Speed :- (a) 80 rpm. (b) 120 rpm. (c) 140 rpm. Contd. | ||