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 new type exhaust valve and stronger tappet springs for standard cars.
| Identifier | ExFiles\Box 14\6\ Scan271 | |
| Date | 22th September 1932 | |
| RR 782 (10M) (80408. 21-4-32) BM. 3/6382/4. X7230. COMPLETED 15.11.32. STANDARDISATION of CHASSIS PARTS. Date 22.9.32. Description of Parts. NEW TYPE EXHAUST VALVE AND STRONGER TAPPET SPRINGS FOR PRESENT STANDARD CARS. X No. 7230 Drawing No. E.{Mr Elliott - Chief Engineer} 82489 Part List Origin. To prevent exhaust valves stretching on present standard cars with 5-1 com: ratio stronger tappet springs to prevent valve spring bounce. Experimental Test Report. Fitted to 19-EX. and completely eliminated the trouble. Road Test Report. Fitted to 25-EX. Road test was quite satisfactory for silence etc. Weight of Old Part. Cost of Old Part. £ 2-4-10 Cost of Parts in Works which will be scrapped if commenced on:- Weight of New Part. Cost of New Part. £ 2-4-10 Series.........£........ Difference per Car. Difference per Car. £ none Series.........£........ Signature from Cost Dept. that above is correct. GRL 10/11/32. GRL 11/11/32 Series.........£........ INITIAL | DATE | REMARKS SG.{Arthur F. Sidgreaves - MD} | 14-10-32 | Agreed Sg.{Arthur F. Sidgreaves - MD} R.{Sir Henry Royce} | 1.10.32. | Agreed FHR. WOR.{Arthur Wormald - General Works Manager} | 24.9.32. | Agreed Wor.{Arthur Wormald - General Works Manager} C. | 26.9.32. | Agreed C. RG.{Mr Rowledge} | 26.9.32. | Agreed Rg.{Mr Rowledge} DA.{Bernard Day - Chassis Design} | 24.9.32. | Agreed Da.{Bernard Day - Chassis Design} BY.{R.W. Bailey - Chief Engineer} | 26.9.32. | Agreed By.{R.W. Bailey - Chief Engineer} EP.{G. Eric Platford - Chief Quality Engineer} | 23.9.32. | Agreed EP{G. Eric Platford - Chief Quality Engineer} & Mx.{John H Maddocks - Chief Proving Officer} Understand to cure Exhaust valve stretch only. EP.{G. Eric Platford - Chief Quality Engineer} E.{Mr Elliott - Chief Engineer} | 11.10.32 | Agreed AE. Assuming that the noise trouble at present being experienced can be overcome. PN.{Mr Northey} | 22.9.32. | Agreed PN.{Mr Northey} HS.{Lord Ernest Hives - Chair} | | Agreed Hs.{Lord Ernest Hives - Chair} PHANTOM | ||