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).
Development and cost comparison for a new 4-shoe brake system for the Wraith.
| Identifier | ExFiles\Box 148\5\ scan0316 | |
| Date | 1st March 1938 | |
| 1260. To G/Rb.{R. Bowen} from Rm{William Robotham - Chief Engineer}/AFM.{Anthony F. Martindale} Rm{William Robotham - Chief Engineer}/AFM.{Anthony F. Martindale}3/AP.1.3.38 WRAITH 4- SHOE BRAKE. We have built a 4 shoe brake for the front of Wraith, because the present brakes lack lining area; in consequence the brakes wear too rapidly and in France, an iron drum has cracked. We attach a set of prints and LOP. of the 4 shoe brake: will you please give us a comparison of cost between these and GCD.152 and 163, on production. We do not want the cost of the brake drum including (because we use the same drum in both cases) and the only big difference is between the two types of shoes and their anchorages. RHC{R. H. Coverley - Production Engineer}/SB.{Mr Bull/Mr Bannister} thinks the carrier shoes can be hot pressings: this is the most economical way to make them. Can you also say what economy could be effected by deleting the eight guide fingers, and their steel bushes and Thackray washers. Rm{William Robotham - Chief Engineer}/AFM.{Anthony F. Martindale} | ||