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).
Cost comparison for a Wraith pedal gap plate made from Aluminium versus Bakelite.
| Identifier | ExFiles\Box 148\2\ scan0154 | |
| Date | 18th April 1939 | |
| 1260 + 635 To Rm. {William Robotham - Chief Engineer} from Rm {William Robotham - Chief Engineer} /NRC. {N. R. Chandler} COPY FOR FILES. Cost 18.4.39. WRAITH. PEDAL GAP PLATE FW.1227/8. ALUMINIUM. Material 5.66 sh. Labour 5.6 200% charges 11.2 22.46 BAKALITE. Bought out complete 5.75 sh. Saving 16.71 sh. per chassis. cost of mould = £185. At 16.71 sh. saving, it would take 222 chassis to write off the die after which the full saving of 16.71 sh. would be available. Rm {William Robotham - Chief Engineer} /NRC. {N. R. Chandler} | ||