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).
Casting solid brake drum rims to avoid machining issues with hard spots on the webs.
| Identifier | ExFiles\Box 120\1\ scan0212 | |
| Date | 9th September 1937 | |
| RHC{R. H. Coverley - Production Engineer} c. HPS{Horace Percy Smith - Experimental Factory Mgr} c. Rm.{William Robotham - Chief Engineer} c. Mr. Martindale 1028 BY.7/G.9.9.37. BRAKE DRUMS CAST ON MILD STEEL BACK PLATE. Re: RHC{R. H. Coverley - Production Engineer}/Vs.{J. Vickers}2/JS.{Mr Johnson's Secretary}2.9.37. The only reason for casting the rim solid was that hard spots were encountered in trying to machine the webs. We must have a balanced drum, and this I am afraid means machining the ribs and general outline. BY.{R.W. Bailey - Chief Engineer} By | ||