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).
Flux test report for a motor with two sets of readings under different brush settings.
| Identifier | ExFiles\Box 35\4\ scan 093 | |
| Date | 27th January 1922 | |
| MOTOR FORM 1. FLUX TEST OF MOTOR. Date:- 27.1.22. Motor under test :- R.R. Gos No:- / No. of excitation turns per pole :- 5 1/2 No. of armature conductors in series between brushes:- 58 [Handwritten Annotations in Red Ink: '1', '1st'] | Exciting current (amperes). | Speed (R.P.M.) | Volts. | Volts/Speed. | Flux per pole. | Remarks. | |---|---|---|---|---|---| | 20 | 500 | .933 | .00186 | [Struck out: 48,800] 48,050 | Brushes central | | | 1000 | 1.870 | .00187 [.00186] | | | | | 1500 | 2.76 | .00184 | | | | 80 | 500 | 2.69 | .00538 [.00540] | 139,600 | | | | 1000 | 5.42 | .00542 [.55?] | | | | | 1500 | 8.09 | .00539 | | | | 20 | 500 | .942 | .00188 | 48,600 | Brushes advanced [Struck out: retarded] | | | 1000 | 1.900 | .00190 [.00188] | | | | | 1500 | 2.79 | .00186 | | | | 80 | 500 | 2.67 | .00534 | 138,000 | | | | 1000 | 5.36 | .00536 [.00534] | | | | | 1500 | 7.97 | .00531 | | | [Bottom left corner]: 19.5.21. [Right margin text]: R.R. 283A. (100) T/S H.{Arthur M. Hanbury - Head Complaints} 798. 10-12-20. G 4947 | ||