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 exhaust valves made from K.E. 965 material with Stellite tips to prevent stretching and fractures.
| Identifier | ExFiles\Box 88\4\ scan0041 | |
| Date | 20th December 1933 | |
| RR 755B (BH) (S2674, 16-10-33) BM. 3/262/6. X254. Completed 6.2.34 BENTLEY STANDARDISATION of PARTS. Date 20.12.33 X No. 254. Drawing No. LeC. 3680. Part List Description of Parts. EXHAUST VALVES TO LeC.3680, in K.E. 965 material, with Stellite Tips. Origin. To overcome stretching of valves, and fractures. Report of Experimental Test. Fitted to 1-B-IV and ran 10,000 miles in France. No trouble has been experienced. The clearance when cold was .006". There has been no sign of the valves being kept open due to expansion when hot. Weight of Old Part. Cost of Old Part. £ - 15 - 10 Weight of New Part. Cost of New Part. £ 1 - 5 - 3 Difference per Car. Difference per Car. £ - 9 - 5 INCREASE. Signature from Cost Dept. that above is correct. G/RL 26-1-34. Cost of Parts in Works which will be scrapped if commenced on :- Series..........£.......... Series..........£.......... Series..........£.......... INITIAL | DATE | REMARKS SG.{Arthur F. Sidgreaves - MD} | 5-2-34. | Agreed Sg.{Arthur F. Sidgreaves - MD} WOR.{Arthur Wormald - General Works Manager} | 29.1.34. | Agreed Wor.{Arthur Wormald - General Works Manager} C. | 29.1.34. | Agreed C. RG.{Mr Rowledge} | | Rg.{Mr Rowledge} absent. DA.{Bernard Day - Chassis Design} | 30.1.34. | Agreed Da.{Bernard Day - Chassis Design} BY.{R.W. Bailey - Chief Engineer} | 29.1.34. | Agreed By.{R.W. Bailey - Chief Engineer} EP.{G. Eric Platford - Chief Quality Engineer} | 29.1.34. | Agreed EP.{G. Eric Platford - Chief Quality Engineer} E.{Mr Elliott - Chief Engineer} | 2.2.34. | Agreed AE. BN.{W.O. Bentley / Mr Barrington} | 30.1.34. | Agreed Bn.{W.O. Bentley / Mr Barrington} SFT.{Mr Swift} | 29.1.34. | Agreed Sft.{Mr Swift} MX.{John H Maddocks - Chief Proving Officer} | 29.1.34. | Agreed Mx.{John H Maddocks - Chief Proving Officer} HS.{Lord Ernest Hives - Chair} | 27.1.34. | Agreed Hs.{Lord Ernest Hives - Chair} Received. 5 FEB 1934 J S | ||