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).
Dynamo characteristics and headlamp requirements for two chassis models.
| Identifier | ExFiles\Box 165\6\ img189 | |
| Date | 28th January 1929 | |
| V566d FN.3/WT28.1.29. S/W. Wor.{Arthur Wormald - General Works Manager}..from PN.{Mr Northey} Copy Sg.{Arthur F. Sidgreaves - MD} --> Copy to Hs.{Lord Ernest Hives - Chair} Ox. (text has been struck through) HREC GWD. (text has been struck through) BATTERY CHARGING RATES. X5660 We should like to know exactly how the position now stands in respect of dynamo characteristics of our two chassis, from the point of view of there being adequate charging of the battery possible for those who have much town work to do, and have to use their headlights also, quite a lot. The whole question of adequate lighting and proper control of such headlamp lighting is one which we feel should be gone into very thoroughly as soon as possible, as the subject becomes more urgent daily. The conditions to be fulfilled are :- a.{Mr Adams} The headlamps must give adequate light for driving fast in the country. b. It must be possible to prevent headlamp users in this way from embarrassing other road users by an effective and easily operated mechanism or device. c. Such method should still enable the car to proceed fairly fast in spite of the altered conditions, the major part of the light being thrown to the nearside in this country. d.{John DeLooze - Company Secretary} In France these conditions are only partly fulfilled and not at all satisfactorily. The conventional and regulation method being held to be sufficient if one headlamp (the left-hand side one on the Continent) is turned out. I think there is a great deal to be said for a system in which, for this country the righthand headlight can be turned out at the same time as the left-hand headlight is deflected both downwards and to the left. To effect this change it must not be necessary to operate any lever or mechanism requiring an effort, there should be no more inconvenience to the driver than to depress a button or switch conveniently disposed. All heavy strongly made mechanism such as the Barker, for dipping and swivelling headlights are ugly and heavy and extremely undesirable from many points of view. The changes which are required when driving | ||