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).
Cylinder bore wear, comparing chromium plating and liners as solutions.
Identifier | ExFiles\Box 132\5\ scan0033 | |
Date | 27th January 1939 | |
To Hs.{Lord Ernest Hives - Chair} from Rm.{William Robotham - Chief Engineer} c. By.{R.W. Bailey - Chief Engineer} γ 1123? Rm.{William Robotham - Chief Engineer}5/MH.{M. Huckerby}27.1.39. CYLINDER BORE WEAR. As previously pointed out, we consider this will be the limiting factor on durability on B.V. We have just received information of three of the latest B.II's requiring reboring after running less than 15,000 miles. Leylands agree that chromium easily heads the list for durability, so does everyone else. Rovers have 100 cars in service with chrome plated bores. Occasional piston scuffing only trouble, cost less than 1/- per bore. Cheapest type of liner 3/-d.{John DeLooze - Company Secretary} per bore. Rovers state plating only the part of the bore that wears, i.e. the top third, completely overcomes scuffing experimentally and they are going into production on a percentage of their output. We feel that we should follow this up at once and should like your agreement to put the necessary jigs in hand. Rm.{William Robotham - Chief Engineer} | ||