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).
Costing and production details for sets of Whitemetal main bearings.
| Identifier | ExFiles\Box 115\3\ scan0219 | |
| Date | 2nd May 1938 | |
| 1020. Rm.{William Robotham - Chief Engineer} from Rm{William Robotham - Chief Engineer}/Swdl.{Len H. Swindell} Typed 2.5.38. 3 sets of Whitemetal main bearings without shims were made. 1 set on W.III No.4. 27.G.VI. 1 set on B.III No.2. 1st. set officially ordered by us is for B.III No.3 unit. Approx. cost of producing above per set of bearings. Material Labour Total + 200% Labour 5.066 9.801 34.5 Actual fitting of bearings in crankcase approx. 12 hours work for 1 man say 25s. + 50s (200%) = 75s. Taking into account forming of bearing without shims would say a total of 125s. | ||