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).
Use of a resistance unit for reduced side lamp illumination when a vehicle is parked.
| Identifier | ExFiles\Box 61a\2\ scan0217 | |
| Date | 30th January 1934 | |
| Sg.{Arthur F. Sidgreaves - MD} From Hs{Lord Ernest Hives - Chair}/Wst. c. to E.{Mr Elliott - Chief Engineer} c. to Cx.{Major Len W. Cox - Advertising Manager} ما116 Hs{Lord Ernest Hives - Chair}/Wst.3/MA.30.1.34. REDUCED SIDE LAMP ILLUMINATION FOR PARKING. Replying to your Sg.{Arthur F. Sidgreaves - MD}16/E.29.1.34., it is quite a simple matter to arrange a small resistance unit behind the instrument board which could be switched in circuit with the side lamps when leaving the car parked. The reason we have not considered such an arrangement necessary, is that we always recommend the smallest obtainable lamp bulb i.e., 4 watt which only represents, with side and tail lamp on, a discharge of 1 ampere from the battery. Also with the new vibrator controlled dynamo scheme the battery always receives extra charge when partially discharged. We are however arranging to rig up a resistance unitand switch on an experimental chassis for trial. Hs{Lord Ernest Hives - Chair}/Wst. | ||