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 valve springs, bottom washers, and valve guides to enable higher engine revs without spring bounce.
| Identifier | ExFiles\Box 56\2\ Scan116 | |
| Date | 7th January 1932 | |
| RR 755 (10H) (T9120, 13-10-31) BM. S/7586. COMPLETED 16. 2. 32. X290 STANDARDISATION of CHASSIS PARTS. Date 7.1.32. X No. 290 Drawing No. .451 Part List Description of Parts. VALVE SPRINGS INCORPORATING, E.57353 VALVE SPRING BOTTOM WASHER, & E.57303 EXHAUST VALVE GUIDES, E.57225 INLET VALVE GUIDES. Origin. To enable higher revs. of engine without springs bouncing. Experimental Test Report. Fitted to 18.G.IV. for tests in France. Road Test Report. Fitted to 18.G.IV. and ran 10,000 miles in France. There was no sign of the valves bouncing. No springs have broken; they were quiet in operation. Weight of Old Part. Cost of Old Part. £ --- Cost of Parts in Works which will be scrapped if commenced on :- Weight of New Part. Cost of New Part. £ --- Series.......£....... Difference per Car. Difference per Car. £ --- Series.......£....... Series.......£....... Signature from Cost Dept. that above is correct. G/Rb.{R. Bowen}10.2.32 G/Can. Wor{Arthur Wormald - General Works Manager} INITIAL DATE REMARKS SG.{Arthur F. Sidgreaves - MD} 15.2.32 Agreed Sg.{Arthur F. Sidgreaves - MD} R.{Sir Henry Royce} 9.1.32. Agreed FHR. WOR.{Arthur Wormald - General Works Manager} 8.1.32. Agreed Wor.{Arthur Wormald - General Works Manager} C. 8.1.32. Agreed C. RG.{Mr Rowledge} 8.1.32. Agreed Rg.{Mr Rowledge} DA.{Bernard Day - Chassis Design} 11.1.32. Agreed Da.{Bernard Day - Chassis Design} BY.{R.W. Bailey - Chief Engineer} 8.1.32. Agreed By.{R.W. Bailey - Chief Engineer} EP.{G. Eric Platford - Chief Quality Engineer} 14.1.32. Agreed EP.{G. Eric Platford - Chief Quality Engineer} - Assume with new type valves. E.{Mr Elliott - Chief Engineer} 11.1.32. Agreed AE. PN.{Mr Northey} 8.1.32. Agreed PN.{Mr Northey} HS.{Lord Ernest Hives - Chair} 8.1.32. Agreed Hs.{Lord Ernest Hives - Chair} | ||