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).
Technical proposal for the arrangement of headlamps integrated into the wings of a 'Cresta' model.
| Identifier | ExFiles\Box 167\1\ img329 | |
| Date | 6th June 1939 | |
| BY/NS{Norman Scott} c. Rm.{William Robotham - Chief Engineer} o.{Mr Oldham} Da{Bernard Day - Chassis Design}/SD. 6116 DA.{Bernard Day - Chassis Design}9/G.6.6.39. CHILDS D.CD.1391 - HEADLAMPS IN WINGS. "CRESTA". The above scheme shews the proposed arrangement for the first pair of lamps. These will have an adjustable reflector for a 165 diameter lamp, as proposed on Lucas drawing No. FX.5029. As the wings are already made, the lamp casing has been shortened to fit the space available, and maintain adequate clearance with tyre on full bump. The lamps are arranged for bi-focal dipping i.e. double filament bulbs, and also include auxiliary bulbs at the top to replace normal side lamps. Cables for first pair will be brought out through the centre clamping bolt. The lamp glass will be in "Perspect", shaped to follow the contour of wing, and have suitable vertical striations, with side lamp anti-dazzle surface at top. The glass will be secured against a rubber seal with a chromium plated cast rim, held down by four countersunk head screws on front face. To change a bulb, remove rim and glass from front of wing. To accommodate the diameter of lamp casing shown by Messrs. Lucas, and to keep the front rim symmetrical, it will be necessary to slightly modify the shape of the wings locally to fit up to the front rim on offside and nearside edge. No details are required, as Messrs. Lucas are arranging to build up the first pair of lamps in conjunction with our scheme, and a model of the wing supplied by Park Ward. If dipping mechanism is required for future lamps, a longer lamp casing will be required as shown on drawing FX.5029. This means pushing the wing forward to maintain clearance with wheel. DA.{Bernard Day - Chassis Design} | ||