Machining issue with steel brake shoes for the Wraith III and a proposed solution.
| Identifier | ExFiles\Box 7\7\ X 606 Brakes-page125 | |
| Date | 27th March 1938 | |
| 606 RMC. c. Mr. c. Mm. c. WEC/Wisk. e. {Mr Elliott - Chief Engineer} ET/Orig. HY. {Tom Haldenby - Plant Engineer} D/G.27.3.38. WRAITH 111. A.F.M RE: STEEL BRAKE SHOES. After investigation we find that it is not possible to alter the position of the fulcrum boss to facilitate machining. The cutting tool must be arranged to jump the boss, if it cut the boss away it would reduce the section below the safe limit i.e. section reduced to .075. Any modification made at this date would necessitate alterations to the tools used for manufacturing the carrier plate as well as laying us open to unforeseen troubles. After the 300 chassis a fabricated shoe, which cuts out this machining trouble will be introduced. The fabricated shoes will be fitted on to the same carrier plates as now instructed for production. BM BY. {R.W. Bailey - Chief Engineer} | ||
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).