Experiments on 14' brake drums to optimize rib placement for rigidity and weight.
| Identifier | ExFiles\Box 84\2\ scan0304 | |
| Date | 14th February 1935 | |
| To RHC. {R. H. Coverley - Production Engineer} 406 Hs {Lord Ernest Hives - Chair} /Rm. {William Robotham - Chief Engineer} 15/KW.14.2.35. 14" Brake Drums. We carried out a lot of experiments to determine the best place for the ribs on a drum to get the maximum rigidity with the minimum weight. Our final suggestions are shown on the attached blue print. We prefer scheme 2, which has a different arrangement of the back plate. We should be glad if you could machine two of the castings which you have to scheme 2 for test. We have shown the ribs very narrow, with no taper on them, but if you have difficulty in producing these will you please modify them to suit your own convenience. Actually, from the point of view of rigidity, no greater thickness than this is required. Hs {Lord Ernest Hives - Chair} /Rm. {William Robotham - 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).