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).
Letter from Wellworthy Piston Rings discussing AC.9 bearings and their performance against chrome plated shafts.
| Identifier | ExFiles\Box 115\4\ scan0012 | |
| Date | 17th July 1939 | |
| WELLWORTHY PISTON RINGS LIMITED CONTINUATION No. 1. W. A.{Mr Adams} Robotham Esq. 17th July, 1939. stuff it has proved itself quite as well when used as a Main Bearing as with Big Ends. Incidentally in certain directions there are increasing tendencies to use Chrome Hardened Shafts. Have you done anything yet at Derby regarding the running of AC.9 Bearings against Chrome Plated shafts? It would be interesting to know whether you have any experience in this direction. Yours sincerely, F G Blackith DICTATED BUT NOT SIGNED BY Mr. BLACKITH | ||