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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
  
  


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