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).
Risks of using AC.9 bearing material and proposing to use AC.7 for 'M' series cars.
| Identifier | ExFiles\Box 161a\3\ scan0030 | |
| Date | 20th January 1939 | |
| - 2 - BY.11/G.20.1.39. would therefore appear that we are risking another A.C.2 debacle, if we were to introduce AC.9 at this juncture. It has, of course, been tried out on experimental cars, but so had AC.2. The proposal therefore is that we face any scrap which is necessary to produce AC.7 for the 100 cars in 'M' series rather than risk trouble by using AC.9 for the main bearings; for the big ends AC.9 will still continue to be used. BY.{R.W. Bailey - Chief Engineer} By | ||