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 ampere-speed curve, utility tests, and sparking characteristics.
| Identifier | ExFiles\Box 48\2\ Scan339 | |
| Date | 23th November 1925 guessed | |
| -4- (10) Closed circuit primary ampere-speed curve. Speed. Amperes. Speed. Amperes. 100 .62 1200 3.56 200 1.13 1600 3.81 300 1.60 2000 3.93 400 2.02 2400 4.03 600 2.61 2800 4.10 800 3.11 3200 4.16 1000 3.37 3400 4.20 (11) Utility tests. (a) 8.2 mm (b) 7.8 mm (c) 7.4 mm (d) 5.4 mm (11a) Speed range :- 500 to 3000 rpm. (12) Maximum high speed sparking :- 3450 rpm. (13) Low speed sparking characteristics Speeds :- (a) 210 rpm (b) 160 " (c) 160 " Contd. | ||