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 six Lucas RR.1 type regulators, tested against a specific specification.
| Identifier | ExFiles\Box 166\2\ img253 | |
| Date | 18th January 1939 | |
| Six Lucas RR.1 type regulator DB.{Donald Bastow - Suspensions}1923. Tested to Specification No. ELC.7.S.18.1.39. Unit No. | Output at 13.5 volts (a) | Output at 15.5 Volts (A) | O.C. Volts. Cold | Cold | Hot | Cold | Hot | VII. | 16.2 amps. | 20.5 amps. | 5.7 amps. | 9.8 amps. | Oscillates between 16.2 and 16.6 VIII. | 17.5 amps. | 19.2 amps. | 6.8 amps. | 10.2 amps. | 16.4 IX. | 16.2 amps. | 19.8 amps. | 5.0 amps. | 7.5 amps. | 16.1. X | 17.9 amps. | 15.9 amps. | 4.0 amps. | 5.4 amps. | 16.1. XI. | 16.5 amps. | 13.6 amps. | 5.1 amps. | 2.6 amps. | 16.2 XII. | 15.7 amps. | 19.2 amps. | 4.2 amps. | 10.3 amps. | Oscillates between 16.0 and 16.5. | ||