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).
Production of Bentley Lead Bronze Bearings and the use of liners in engines.
| Identifier | ExFiles\Box 114\2\ scan0132 | |
| Date | 18th March 1935 | |
| x46 33 To RHC.{R. H. Coverley - Production Engineer} from E.{Mr Elliott - Chief Engineer} E.1/HP.18.3.35. c. Wcr. Hs.{Lord Ernest Hives - Chair} Dy.{F R Danby} Bentley Lead Bronze Bearings. Many thanks for your interesting report RHC.{R. H. Coverley - Production Engineer}1/MS.13.3.35 on big-end lead bronze bearings giving the method of producing strip type bearings, and particulars of the latest bearing metal technique from U.S.A. We note that a cleaning charge is now available for deoxidizing the copper before casting. With regard to the question of deleting liners from big-end bearings, when we took this point up with the Repair Department they wished to retain the liner for the convenience we know it provides of easily adjusting big-end clearances without interfering with the main portions of the rod. We do not think this position will remain unalterable more particularly with the use of hardened crankshafts, and we also think suitable schemes could be devised for preventing the bearing shells from turning. We are committed to dropping liners when it comes to such a rod as we have on the SpectreCodename for Phantom III engine, and we are, therefore, putting up to the Repair Department a scheme for having replacement liners available with bores produced in suitable steps for taking up wear or for where readjustment of bearing clearance is necessary. In the meantime we are also working on a proposal which will enable us to use liners and bearing shells in existing type rods without the liners having to be faced with bearing metal as we shall certainly want something of this nature for immediate production requirements. E.{Mr Elliott - Chief Engineer} | ||