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).
Amperage, turns, and frictional effects in a motor winding.
| Identifier | WestWitteringFiles\P\October1926-November1926\ Scan002 | |
| Date | 1st October 1925 | |
| Contd. -2- EFC2/T1.10.25. and the turns 36. This would be the equivalent of 17 amperes in the present case, using the actuator box and 25 amperes; not using it, i.e. to 510 and 750 ampere turns respectively. In the case of the main winding the number of turns is 64. It is difficult to say precisely to what the amount of current would be reduced when the engine is driving the motor before disengagement, but I should think it might easily go below the 50 amperes, which is the smallest current for which we have drawn a curve. The frictional effect at axial forces below 4 lbs. weight would be relatively so large as rather to upset the readings. The curves that have been obtained, however, are for the case of friction eliminated by a method which was found to be sufficiently reliable. EFC. | ||