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 stepped exhaust valve stems.
| Identifier | ExFiles\Box 17\6\ Scan250 | |
| Date | 1st June 1934 | |
| RR 788 (SH) (S2674, 16-10-33) BM. 3/262/6. COMPLETED 21.6.34. 40/50 STANDARDISATION OF PARTS. Date 1.6.34. X No. 7060. Drawing No. Part List Description of Parts. EXHAUST VALVE STEMS STEPPED. Origin. To prevent valves sticking, and to bring into line with 25 HP. and Bentley. Report of Experimental Test. Fitted to 28-EX and ran 10,000 miles in France. Weight of Old Part. Cost of Old Part. £ Weight of New Part. Cost of New Part. £ Difference per Car. Difference per Car. £ NEGLIGIBLE Signature from Cost Dept. that above is correct. G.W. 29-5-34. Cost of Parts in Works which will be scrapped if commenced on:- Series..........£....... Series..........£....... Series..........£....... INITIAL | DATE | REMARKS SG.{Arthur F. Sidgreaves - MD} | 19.6.34 | Agreed Sg{Arthur F. Sidgreaves - MD} WOR.{Arthur Wormald - General Works Manager} | 4.6.34. | Agreed Wor.{Arthur Wormald - General Works Manager} C. | 4.6.34. | Agreed C. RG.{Mr Rowledge} | | Rg.{Mr Rowledge} absent. DA.{Bernard Day - Chassis Design} | 6.6.34. | Agreed Da.{Bernard Day - Chassis Design} BY.{R.W. Bailey - Chief Engineer} | 5.6.34. | Agreed By.{R.W. Bailey - Chief Engineer} EP.{G. Eric Platford - Chief Quality Engineer} | 2.6.34. | Agreed EP.{G. Eric Platford - Chief Quality Engineer} E.{Mr Elliott - Chief Engineer} | 6.6.34. | Agreed AE. BN.{W.O. Bentley / Mr Barrington} | 4.6.34. | Agreed Bn.{W.O. Bentley / Mr Barrington} SFT.{Mr Swift} | 4.6.34. | Agreed Sft.{Mr Swift} MX.{John H Maddocks - Chief Proving Officer} | 2.6.34. | Agreed Mx.{John H Maddocks - Chief Proving Officer} HS.{Lord Ernest Hives - Chair} | 1.5.34. | Agreed Hs.{Lord Ernest Hives - Chair} Received. | ||