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).
Requesting the machining of piston scraper rings to reduce bedding-in time.
| Identifier | ExFiles\Box 148\3\ scan0391 | |
| Date | 14th September 1938 | |
| c. Rm{William Robotham - Chief Engineer}/Wym{G. Harold Whyman - Experimental Manager} To. HPS.{Horace Percy Smith - Experimental Factory Mgr} from Rm{William Robotham - Chief Engineer}/Swdl.{Len H. Swindell} 1256 Rm{William Robotham - Chief Engineer}/Swdl.{Len H. Swindell}4/MH.{M. Huckerby}14.9.38. PISTON RINGS. Will you please machine down one land of the scraper rings which we will supply, by .004 on the diameter. The object of this is to reduce the time taken to bed in on account of poor bedding scraper rings experienced on 2o.G.VI. Rm{William Robotham - Chief Engineer}/Swdl.{Len H. Swindell} | ||