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).
Test results for two plant machines of Phantom dynamo size, detailing field loading and running light as a motor.
| Identifier | ExFiles\Box 34\4\ Scan188 | |
| Date | 8th October 1929 | |
| X2048. 8.10.29. PLANT MACHINES OF PHANTOM DYNAMO SIZE Machine Pt.1. Field loading hot Volts 21.4 Amperes .77 Watts 16.5 Ohms. 27.8 Running light as motor :- Rotation Volts Amperes R.P.M. + 19.4 3.95 700 - 19.4 4.05 745 Machine Pt.2. Field loading hot Volts 21.2 Amperes 1.95 Watts 41.3 Ohms 10.9 Running light as motor :- Rotation Volts Amperes R.P.M. Either 15.0 3.4 438 | ||