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).
Comparison of estimated and observed Goshawk quantities for a shunt machine operating at the cutting-in point.
| Identifier | WestWitteringFiles\K\November1923\ Scan71 | |
| Date | 23th November 1923 | |
| 23.11.23. ESTIMATED AND OBSERVED GOSHAWK QUANTITIES OPERATING ON THE CUTTING IN POINT AS A SHUNT MACHINE. (HOT) Estimated. Observed. Armature resistance at 100ºC. .48 .49 Field resistance at 100ºC. 3.26 3.4 Field amperes. 4.17 4.0 Field turns. 120 120 Field ampere turns. 500 480 Useful flux. 170,000 160,000 E.M.F. 15.6 15.6 Lost volts in armature. 2.0 2.0 P.D. 13.6 13.6 Speed. 590 625 EPC. | ||