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 parts document for the panel milling of a connecting rod.
| Identifier | ExFiles\Box 171\5\ img035 | |
| Date | 12th May 1938 | |
| RR 755B (10H) (49968) 19/10/37 C.E.Co. 17.6.38 BENTLEY STANDARDISATION OF PARTS Date Issued: 12.5.38. Sheet No.: B.13. Drg. No.: EB.3443/4 L.O.P.S. Description: PANEL MILLING OF CONNECTING ROD. Purpose: Ease of production manufacture. Brief Report and Remarks: Modified panel milling for ease of manufacture similar to that used on Wraith III rods and run 15,000 miles test in France in 26.G.VI. Similarly milled rods have run 40 hr. endurance test satisfactorily. When recommended for Introduction: 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} Old Parts: Material £0.10.8, Labour £2.1.0, Burden £3.11.9, Total £6.3.5 New Parts: Material £0.10.8, Labour £1.16.4, Burden £3.3.7, Total £5.10.7 Decrease in Cost: £ 0.12.10. G.Rh.{R. Hollingworth} 9/6/38 Cost of Tools: £ Nil. Production Position and Comments: Simplified panel milling of connecting rod may be introduced without scrap at approx. 90th chassis in 'M' series, and provides a saving of 12/10d. per chassis. No tool cost is involved since milling cutters already in existance for Wraith connecting rods can be used. RHC.{R. H. Coverley - Production Engineer} Authorisation to Proceed. Introduce on the 90 Chassis in M Series. Sg.{Arthur F. Sidgreaves - MD} Signature, Date: 14/6/38 Hs.{Lord Ernest Hives - Chair} Signature | ||