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).
Worn cylinder block from an A.F. Ferguson Bentley, highlighting issues with oval bores and the current boring/honing process.
| Identifier | ExFiles\Box 88\1\ scan0298 | |
| Date | 3rd December 1936 | |
| 261 COPY. To Rm.{William Robotham - Chief Engineer} Kingsbury. Dec. 3rd. 1936. I am sending you a cylinder block taken off A.F. Ferguson's Bentley, mileage 8,229. The cylinder bores are badly worn, are not true with the base, are oval, and was over-oiling 700 M.P.G. It will be in case No.65. We have had the bores just touched on the grinding machine to show ovality, out of truth with base, etc. It shows clearly the trouble with our present method of boring and honing. Rm{William Robotham - Chief Engineer}/G.W.Hancock. | ||