List of five potential cost-saving measures for crankshaft manufacturing, comparing options and their impact on factory cost.
| Identifier | ExFiles\Box 8\5\ 05-page66 | |
| Date | 17th June 1939 | |
| -2- AM/Sedl.1/RM. {William Robotham - Chief Engineer} 17.6.39. Feasible economies from the following:- (1) Carbon crankshaft compared with F.O.M. saves 2/- (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 15/- (factory cost) which unmachined would be saved. (4) Unmachined crankshaft webs on the faces and including item (1); profiling would save 30/- (factory cost). (5) Solid crank, i.e. no oilers or boring in the pins and journals, would save approximately :- material : 45/- (labour : 20/-) a total factory cost of 90/-. The factory cost of the standard F.O.M. with crankshaft complete to LOP is £15.11.9d. AM/swdl. {Len H. Swindell} | ||
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).