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 procedure for a dynamo and regulator, detailing output specifications at various voltages and speeds.
| Identifier | ExFiles\Box 60\3\ Scan260 | |
| Date | 1st November 1933 guessed | |
| -3- indicated probably by a fall in the terminal voltage and a flickering of the instrument needle. The speed of the dynamo shall then be varied up to 5,000 R.P.M. At all speeds above the minimum required to operate the regulator the voltage should lie between 14.7 and 15.7. (2) Output at 13.0 Volts. With the dynamo delivering current to the battery and the regulator still cold the dynamo shall be again gradually speeded up, the voltage being maintained at 13.0 by adjustment of the variable resistance. The current at 13.0 volts required to commence operation should be noted, after which the speed should be varied up to 5,000 R.P.M. the output at 13.0 volts still being observed. This should lie between 10.0 and 12.5 amperes. (3) Output at 15.0 volts. Test 2 shall now be repeated but with the terminal volts adjusted to 15.0. In this case the output should lie between 1.0 and 5.5. amperes. (4) In order to heat up the regulator, the dynamo shall now be run at a speed of about 2,000 R.P.M. delivering current at 13 volts, for a period of 2 hours. At the end of this run tests 1, 2, & 3 should be repated, the corresponding values being :- } | ||