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).
Adopting a 12-volt constant voltage lighting system for the 40/50 chassis.
| Identifier | ExFiles\Box 31\1\ Scan024 | |
| Date | 17th January 1919 guessed | |
| X.1402. Extract from E1/G30119. (5) LIGHTING SYSTEM. X.3374 X.3231 X.1402. The most desirable system of lighting to adopt is the type having constant voltage regulation. It is not possible to obtain this in England, it is understood at the present time, for the 40/50 chassis, and unfortunately the Bijur set is only six volts. Mr. Royce will be quite willing to fit a 12 volt Bijur lighting set to the car, and suggests that we endeavour to obtain 12 volt constant voltage regulators, and perhaps make our own dynamos, which scheme could probably be carried out with very little delay. | ||