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).
Requesting clarification on the standard wattage for headlamp bulbs for 20-HP and 40/50 HP chassis.
| Identifier | ExFiles\Box 71\2\ scan0008 | |
| Date | 7th December 1925 | |
| X8800 To EFC. BY/HEB{H. Biraben}2/M.7.12.25. 20-HP. AND 40/50 HP.CHASSIS. HEADLAMPS. J.W. We have received a request from Coachbuilders' enquiring whether 24 Watt or 36 Watt Bulbs in the Headlamps are Standard equipment. We find that the Head Lamps in the Stores are fitted with 36 Watt Bulbs which is apparently the Lucas Standard, but a short time ago we were informed by the Test Dept. that they used 24 Watt Bulbs for all Head-Lamps. We should be glad of your remarks as to which Bulbs we should use as Standard, so that we can notify Coachbuilders'. Also kindly state the size of Bulbs which we should fit for Side and Tail Lamps. BY/HEB.{H. Biraben} AW | ||