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).
Testing of centrifugally cast A.C.2 main bearings and recommending further trials before a production change.
| Identifier | ExFiles\Box 115\3\ scan0207 | |
| Date | 14th March 1938 | |
| By.{R.W. Bailey - Chief Engineer} from Rm.{William Robotham - Chief Engineer} RHC.{R. H. Coverley - Production Engineer} Hs{Lord Ernest Hives - Chair}/JWW. Hl. 1020 Rm{William Robotham - Chief Engineer}3/R.14.3.38. A.C.2 BEARING MATERIALS. It is true that we have completed 11,000 miles on 6.B.IV fitted with centrifugally cast A.C.2 main bearings. This car, however, has been run with an overdrive, which has limited the maximum revs. to 3,600. We shall be examining these bearings on Monday. If they appear to be in good condition we recommend that six cars are put through on test, and if they are satisfactory, production should change over. We suggest that this is necessary before the Works become committed, in view of the consternation and trouble caused by the last attempt to change the bearing material on production. Rm.{William Robotham - Chief Engineer} | ||