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 stepped exhaust valve stems.
| Identifier | ExFiles\Box 171\2\ img166 | |
| Date | 1st June 1934 | |
| RR 755 (SH) (57312, 29-12-33) BM 3/640/2 COMPLETED 21.6.34. 40/50 STANDARDISATION of PARTS. Date 1.6.34. Description of Parts. EXHAUST VALVE STEMS STEPPED. Drawing No. X No. 7060. Part List Origin. To prevent valves sticking, and to bring into line with 20/25 HP. & Bentley. Report of Experimental Test. Fitted to 28-EX and ran 10,000 miles in France. Weight of Old Part. Weight of New Part. Difference per Car. Cost of Old Part. £ Cost of New Part. £ Difference per Car. £ Negligible. Cost of Parts in Works which will be scrapped if commenced on :- Series......£...... Series......£...... Series......£...... Signature from Cost Dept. that above is correct. G/RB.{R. Bowen} 29.5.34. 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} | ||