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 cylinder head and block with modified cores to facilitate casting.
| Identifier | ExFiles\Box 171\5\ img079 | |
| Date | 7th December 1938 | |
| RR 758A (10H) (49908) 19/10/37 C.B.Co. COMPLETED DATE 28.4.39. STANDARDISATION OF PARTS Date Issued: 7.12.38 Sheet No. W.20. Drg. No. EW.1922/3 L.O.P.S. Description: [CROSSED OUT TEXT] WRAITH CYLINDER HEAD & BLOCK WITH MODIFIED CORES. Purpose: To facilitate casting. Brief Report and Remarks: In the above the core holes are in the top of the cylinder block and not the base as before, the same holes being used as waterway holes, thus the new core holes serves two purposes. Can detect no difference in water flow or temp. on test bed and similar head and blocks are fitted to 8.B.V. for further mileage, also to be incorporated on 27.G.VI. Mx{John H Maddocks - Chief Proving Officer}'s car. This head is strength-ened type as per present production for which a sheet was not issued. When recommended for Introduction Report References By Rm{William Robotham - Chief Engineer} Da{Bernard Day - Chassis Design} Mx{John H Maddocks - Chief Proving Officer} By.{R.W. Bailey - Chief Engineer} Rm.{William Robotham - Chief Engineer} Da.{Bernard Day - Chassis Design} Mx.{John H Maddocks - Chief Proving Officer} Material £. s. d.{John DeLooze - Company Secretary} | Labour £. s. d.{John DeLooze - Company Secretary} | Burden £. s. d.{John DeLooze - Company Secretary} | Total £. s. d.{John DeLooze - Company Secretary} Old Parts | 13 2 | 4 11 1 | 1 7 19 | 5 13 8 New Parts | 13 1 | 4 10 9 | 1 7 18 | 5 12 8 Decrease in Cost £ 0. 1. 0. GRL 17/2/39 Production Position and Comments: Cost of Tools £ 17.0.0. Cylinder head and block with modified cores to facilitate casting can be introduced at the 1st. chassis in 'D' series without scrap. There is a decrease in Factory cost of 1/- per chassis and the Tool cost of £17.0.0d. will thus be recovered after producing 340 chassis. RHC.{R. H. Coverley - Production Engineer} Authorisation to Proceed. To be introduced after 'C' series. Introduce on the _________ Chassis in _________ Series. Signature | Date Sg.{Arthur F. Sidgreaves - MD} | 26/4/39 Hs.{Lord Ernest Hives - Chair} | 26/4/39 | ||