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 cast iron cylinder head machined to Hs.1372 for improved performance.
| Identifier | ExFiles\Box 86\1\ scan0136 | |
| Date | 7th September 1934 | |
| RR 755BN{W.O. Bentley / Mr Barrington} (SH) (57312, 29-12-33) BM. 3/640/2 COMPLETED 1.3.35. BENTLEY STANDARDISATION OF PARTS. Description of Parts. CYLINDER HEAD IN CAST IRON AND MACHINED TO Hs.{Lord Ernest Hives - Chair}1372. Origin. To give improved performance in conjunction with larger Inlet Valves. Report of Experimental Test. Fitted to 4-B-IV and run 10,000 miles in France. This sheet also includes larger Inlet Valves EX.11474 and EX.12089, and smaller Exhaust Valves EB.1325). Date 7.9.34. X No. 219. Drawing No. LeC. 3662. Part List Weight of Old Part. Weight of New Part. Difference per Car. Cost of Old Part. £ Cost of New Part. £ Difference per Car. No extra Cost if made in production quantities G/RL 7/1/35 Signature from Cost Dept. that above is correct. Cost of Parts in Works which will be scrapped if commenced on:- Series.........£......... Series.........£......... Series.........£......... INITIAL | DATE | REMARKS SG.{Arthur F. Sidgreaves - MD} | 26-2-35. | Agreed Sg.{Arthur F. Sidgreaves - MD} for use in special cases only. J.S/59. WOR.{Arthur Wormald - General Works Manager} | 9.1.35. | Agreed Wor.{Arthur Wormald - General Works Manager} C. | 9.1.35. | Agreed C. RG.{Mr Rowledge} | | DA.{Bernard Day - Chassis Design} | 17.1.35. | Agreed Da.{Bernard Day - Chassis Design} BY.{R.W. Bailey - Chief Engineer} | 9.1.35. | Agreed By.{R.W. Bailey - Chief Engineer} EP.{G. Eric Platford - Chief Quality Engineer} | 9.1.35. | Agreed EP.{G. Eric Platford - Chief Quality Engineer} E.{Mr Elliott - Chief Engineer} | 23.2.35. | Agreed AE. Subject to modification mentioned in E.1/HP.23.2.35. BN.{W.O. Bentley / Mr Barrington} | 9.1.35. | Agreed Bn.{W.O. Bentley / Mr Barrington} SFT.{Mr Swift} | 9.1.35. | Agreed Sft.{Mr Swift} MX.{John H Maddocks - Chief Proving Officer} | 9.1.35. | Agreed Mx.{John H Maddocks - Chief Proving Officer} HS.{Lord Ernest Hives - Chair} | 8.1.35. | Agreed Hs.{Lord Ernest Hives - Chair} STAMP: Received. 26 FEB 1935 | ||