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).
Design memo detailing a scheme for the Bonnet Valance Strip for the B.50 model.
| Identifier | ExFiles\Box 112\3\ scan0042 | |
| Date | 13th April 1938 | |
| C. Rm.{William Robotham - Chief Engineer} 805 DA.{Bernard Day - Chassis Design}6/G.13.4.38. B.50. BONNET. STEADMAN We send herewith FD.{Frank Dodd - Bodies}148, a scheme showing the Bonnet Valance Strip for B.50. The rest Angle and Face Plate comprising the valance Strip are again made of sheet steel, but they are totally different from the B.111 pieces shown on F.CD. 303. An attempt has been made to impart greater stiffness to these pieces than was the case with B.111. On FD.{Frank Dodd - Bodies}148 the Rest Angle is shown shaped in the side elevation view, and whilst this will help to provide strength to the assembly, it was chiefly done to avoid bonnet fastener brackets and controls. The frame washers under the bolt and set screw heads are considered to be an improvement on the B.111 design and prevent cutting into the sheet metal by the corners of the heads. Adjustment of the bonnet catches on the Face Plate has been provided for to give a range of movement of .150 inwards, .062 fore and aft horizontally and .062 up or down vertically. This compares with the .312 up or down vertical movement given on B.111 for a different type of bonnet fastener. On B.111 no inwards or sideways variation was catered for. DA.{Bernard Day - Chassis Design} | ||