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).
List of possible economies for crankshaft manufacturing, detailing potential cost savings.
| Identifier | ExFiles\Box 132\1\ scan0146 | |
| Date | 17th June 1939 | |
| -2- Rm{William Robotham - Chief Engineer}/Bwdl.1.EH.17.6.39. Possible economies from the following:- (1) Carbon crankshaft compared with V.C.M. saves 25/-. (2) Boring of pins and journals as at present but sealing by disc washers and not oilers would save approximately £1 (factory cost). (3) Profiling of crankshaft webs costs approximately 12/- (factory cost) which unmachined would be saved. (4) Unmachined crankshaft webs on the faces and including item (3) profiling would save 30/- (factory cost). (5) Solid crank, i.e. no oilers or boring in the pins and journals, would save approximately 5/- material & 45/- (labour + 200s) a total factory cost of 50/-. The factory cost of the standard V.C.M. wraith crankshaft complete to MOP - £15.11.9d. Rm{William Robotham - Chief Engineer}/Bwdl. | ||