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).
Standardisation of a turned finish of crankshaft webs in place of a ground finish.
| Identifier | ExFiles\Box 171\5\ img051 | |
| Date | 12th May 1938 | |
| RR 788B (10H) (49968) 19/10/37 C.E.Co. COMPLETED 22.9.38. BENTLEY STANDARDISATION OF PARTS Date Issued 12.5.38 Sheet No. B.12. Drg. No. EB.3376. L.O.P.S. Description: TURNED FINISH OF CRANKSHAFT WEBS IN PLACE OF GROUND FINISH. Purpose: Reduction in production cost. Brief Report and Remarks: Crankshaft with turned finish webs satisfactory after 40 hr. endurance under severe conditions. When recommended for Introduction: Report References: By: BY.{R.W. Bailey - Chief Engineer} Rm{William Robotham - Chief Engineer}: RM.{William Robotham - Chief Engineer} Da{Bernard Day - Chassis Design}: DA.{Bernard Day - Chassis Design} Mx{John H Maddocks - Chief Proving Officer}: MX.{John H Maddocks - Chief Proving Officer} Production Position and Comments: Old Parts: Material -, Labour £0.1.0., Burden £0.1.9., Total £0.2.9. New Parts: Material -, Labour -, Burden -, Total -. Decrease in Cost: £ 0.2.9. G/R/H 30/9/38 Cost of Tools & NIL. Turned finish on faces of crankshaft webs instead of former ground finish provides a saving of 2/9d. per chassis, due to deletion of grinding operations and involves no tool cost. All crankshafts from approximately the 46th chassis in 'M' series will be machined in this manner. RHC.{R. H. Coverley - Production Engineer} Authorisation to Proceed. Introduce on the 46 Chassis in M Series. Sg.{Arthur F. Sidgreaves - MD} Signature Date 20/9/38 Hs.{Lord Ernest Hives - Chair} Signature Date 20/9/38 | ||