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).
Laboratory memo discussing the stability and suitability of different materials and casting methods for bearings.
| Identifier | ExFiles\Box 115\3\ scan0134 | |
| Date | 2nd December 1937 | |
| To Rm.{William Robotham - Chief Engineer} c. Hs.{Lord Ernest Hives - Chair} c. BY.{R.W. Bailey - Chief Engineer} c. RHC.{R. H. Coverley - Production Engineer} c. HPS.{Horace Percy Smith - Experimental Factory Mgr} c. Hs{Lord Ernest Hives - Chair}/JWW. c. Rm{William Robotham - Chief Engineer}/Swdl.{Len H. Swindell} H1.1/GS.2.12.37. LABORATORY. 1020 Rm.{William Robotham - Chief Engineer}9/R.27.11.37. ? With respect to paragraph 4. I do not know the origin of the statement that "A.C.2 is an unstable material", we have no evidence to that effect. There was some doubt at the time experimental testing of it was undertaken as to its suitability for main bearings owing to its greater hardness and less accommodating nature during running in, than A.C.7. The results, however, appeared to refute this. It has been urged that the die-casting of A.C.6 should be concentrated upon and that a ring, without flanges, would be more easily manufactured than that tried up to the present. The work on centri-cast bearings, I believe, resulted in a loss of interest in the die-cast material. It appears likely, however, that equal economy in the way of weight reduction in the rough, could be attained by die-casting. Hl. lte | ||