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 estimated cost savings on a Continental Unit from proposed modifications.
| Identifier | ExFiles\Box 92\6\ scan0112 | |
| Date | 5th February 1937 | |
| FILE. 300B 5.2.37 ESTIMATED SAVING ON CONTINENTAL UNIT. Included in the following is the overhead of 175% on the labour cost. £. s. d.{John DeLooze - Company Secretary} (1) Deletion of Hydraulic tappet gear and using solid rockers. 14. 0. 0. (2) Deletion of tappet filter and straight thro oil pipe. 10. 0. (3) Deletion of oil cooler. 2. 5. 0. (4) Single valve springs in Swedish wire made at R.R. in place of double springs in S/CV. 1. 15. 0. (5) Hepworth & Grandage liners as quoted in memo RHC.{R. H. Coverley - Production Engineer}6/MJ.2.12.36. in place of Sheepbridge Stokes. 5. 10. 0. (6) Top and bottom spring washers for single springs. 7. 0. (7) Inlet valves in S.65 subject to O.K. 15,000. 6.B.1V. 5. 0. Exhaust valves in S/SLV. subject to O.K. on 15,000 6.B.1V. 8. 0. Total Saving.........25. 0. 0. From the comparative costs of 25/30. W/M.{Mr Moon / Mr Moore} main bearings and Bentley with Hall's metal there is nothing between them. This to be queried as standardisation sheet 1020 of R.R. 56 big end and main shims shews a 75% reduction in cost compared with steel shims with Hall's metal facings. No cost figures are available as yet comparing "Strap rods" in conjunction with Hall's metal bushes which we are using on Continental compared with std. "Marine Rods", W/M.{Mr Moon / Mr Moore} bearings. (8) 4 Port Head Rm{William Robotham - Chief Engineer}/Swdl.{Len H. Swindell} 4/5/- | ||