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, detailing performance at different speeds and currents.
| Identifier | ExFiles\Box 35\4\ scan 095 | |
| Date | 28th January 1922 | |
| MOTOR FORM 1. FLUX TEST OF MOTOR. Date:- 28.1.22 Motor under test:- R.R. Gos. 2nd No:- / No. of excitation turns per pole. 5 1/2 No. of armature conductors in series between brushes. 58 | Exciting current (amperes) | Speed. R.P.M. | Volts. | Volts/Speed. | Flux per pole. | Remarks. | | --- | --- | --- | --- | --- | --- | | 20 | 500 | .855 | .00171 | | | | | 1000 | 1.75 | .00175 | | | | | 1500 | 2.60 | .00173 | 44,700 | Retard. | | 80 | 500 | 2.42 | .00484 | | | | | 1000 | 4.81 | .00482 | | | | | 1500 | 7.20 | .00480 | 124,600 | | 6566 19.5.21. | ||