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 report on valve springs, comparing a new part with an old part.
| Identifier | ExFiles\Box 88\4\ scan0209 | |
| Date | 14th June 1937 | |
| RR 755B (10H) 26074 2-11-36 WHK 24999 COMPLETED 23.8.37. BENTLEY STANDARDISATION of PARTS. Date 14.6.37. X No. 250. Drawing No. EB.3256. Description of Parts: VALVE SPRINGS. Origin: Cheaper springs in "Swedish wire" taking advantage of close coiling to overcome valve spring surge. Report of Experimental Test. The above springs in special coiled form and as bought complete from the Tempered Spring Co. Sheffield 4. have run without failure on 15,000 miles test of 6-B-IV and 3-B-IV in the meantime we are continuing with tests to produce springs at R.R. in Swedish wire. So far these springs have proved more reliable than our standard springs. COST TABLE: Cost of Old Part: MATERIAL: £ - s. 8 d.{John DeLooze - Company Secretary} 0 LABOUR: £ - s. 2 d.{John DeLooze - Company Secretary} 2 CHARGES: £ - s. 3 d.{John DeLooze - Company Secretary} 10 TOTAL: £ - s. 14 d.{John DeLooze - Company Secretary} 0 Cost of New Part: MATERIAL: £ - s. 6 d.{John DeLooze - Company Secretary} 6 LABOUR: Bought Outside CHARGES: TOTAL: £ - s. 6 d.{John DeLooze - Company Secretary} 6 Nett Decrease: £ - s. 7 d.{John DeLooze - Company Secretary} 6 Signature from Cost Dept. that above is correct. GIRh 29.7.37. APPROVALS: INITIAL | DATE | REMARKS SG.{Arthur F. Sidgreaves - MD} | 20-8-37 | Agreed Sg.{Arthur F. Sidgreaves - MD} HS.{Lord Ernest Hives - Chair} | | Agreed Hs.{Lord Ernest Hives - Chair} 2 sets of 50 each. C. | 6.8.37. | Agreed C. E.{Mr Elliott - Chief Engineer} | | DA.{Bernard Day - Chassis Design} | 12.8.37. | Agreed Da.{Bernard Day - Chassis Design} BY.{R.W. Bailey - Chief Engineer} | 3.8.37. | Agreed By.{R.W. Bailey - Chief Engineer} SFT.{Mr Swift} | Rho 4.8.37. | Agreed RHC.{R. H. Coverley - Production Engineer} MX.{John H Maddocks - Chief Proving Officer} | 4.8.37. | Agreed Mx.{John H Maddocks - Chief Proving Officer} RM.{William Robotham - Chief Engineer} | 3.8.37. | Agreed Rm.{William Robotham - Chief Engineer} STAMP: EXAMINED 14 AUG 1937 | ||