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 spring E.58525 and cotter E.58524 for the 25 HP chassis.
| Identifier | ExFiles\Box 106\5\ scan0088 | |
| Date | 2nd September 1932 | |
| RR 755 (10H) (30405. 21-4-32) BM. 3/8382/4. X5060 COMPLETED 28.3.33. STANDARDISATION of CHASSIS PARTS. Date 2.9.32. Description of Parts. VALVE SPRING E.58525 & COTTER E.58524 25.HP. X No. 5060. Drawing No. Part List Origin. This spring gives the same load with the valve open, but less with the valve on the seat, reducing engine gear rattles. Is less stressed than std. springs. Experimental Test Report. Is fitted to 4 units in Expl. Dept. Valves bounce at same speed as with Std. spring. No spring has broken. Done about 6,000 miles on 18.G.IV. and several hours on test bed unit. Road Test Report. Fitted to 19.G.IV. and ran 2,000 miles in France. Weight of Old Part. Cost of Old Part. £0-12-0 Weight of New Part. Cost of New Part. £0-13-1 Difference per Car. Difference per Car. £0-1-1 Increase Signature from Cost Dept. that above is correct. GIR 23/3/33 Cost of Parts in Works which will be scrapped if commenced on:— Series......£...... Series......£...... Series......£...... INITIAL DATE REMARKS SG.{Arthur F. Sidgreaves - MD} 27-3-33 Agreed Sg.{Arthur F. Sidgreaves - MD} R.{Sir Henry Royce} 14.9.32. Agreed FHR. WOR.{Arthur Wormald - General Works Manager} 5.9.32. Agreed Wor.{Arthur Wormald - General Works Manager} C. 5.9.32. Agreed C. RG.{Mr Rowledge} 5.9.32. Agreed Rg.{Mr Rowledge} DA.{Bernard Day - Chassis Design} 6.9.32. Agreed Da.{Bernard Day - Chassis Design} BY.{R.W. Bailey - Chief Engineer} 5.9.32. Agreed By.{R.W. Bailey - Chief Engineer} EP.{G. Eric Platford - Chief Quality Engineer} 19.9.32. Agreed EP.{G. Eric Platford - Chief Quality Engineer} E.{Mr Elliott - Chief Engineer} 5.9.32. Agreed AE. PN.{Mr Northey} 19.9.32. Agreed PN.{Mr Northey} HS.{Lord Ernest Hives - Chair} Agreed Hs.{Lord Ernest Hives - Chair} STAMPS: 25 H.P. CHASSIS RECEIVED 25 MAY 1933 J.S. | ||