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).
Specification sheet for a Dynamo P.T.2, detailing field particulars and running performance.
| Identifier | ExFiles\Box 76\2\ scan0104 | |
| Date | 1st March 1930 | |
| X.632. 1.3.30. DYNAMO P.T.2. Field Particulars. Volts 21.2 Amperes 1.95 Watts 41.3 Ohms 10.9 Running light (Neg. rotation) 435 R.P.M. Volts 15 Amperes 3.4 Positive rotation. 440 R.P.M. Volts 15 Amperes 3.4 | ||