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 chassis parts concerning Firth's Crown steel car engine exhaust valves.
| Identifier | ExFiles\Box 14\6\ Scan119 | |
| Date | 23th August 1929 | |
| RR 753 REVISED (10H) (DF 657 4-1-29) 5M. 2/5943. X1474 . X7230 Completed 21/11.29. STANDARDISATION of CHASSIS PARTS. Date 23.8.29. No. X 4188 X5230 X7230 Description of Parts. Firth's Crown steel Car Engine Exhaust Valves. Origin. To reduce exhaust valve trouble. Experimental Test Report. We have proved this steel out on the R engine. It is better than anything we have previously tried. These valves have also run 250 hours on 'F' engines. Road Test Report. Cost of Old Part. £ 1-18-3 Cost of New Part. £ 2-5-11 Difference per Car. £0-7-8 increase Cost of Old Part. £ 1-12-9 Cost of New Part. £ 1-19-11 Difference per Car. £ 0-7-2 increase Signature from Cost Dept. that above is correct. GRH 14/11/29 Mh{M. Huckerby} 4/11/29 STAMP: J.S. 19 NOV 1929 Received STAMP: CHASSIS 50 A Scrap and replace at all costs, including Chassis already delivered to Customers. B Scrap and replace on Chassis in Works. C Scrap present stock and replace on all Chassis not yet handed to test. D Use existing stock Alteration effective on future Chassis. Cost of Parts in Works which will be scrapped if commenced on:- Series.........£......... Series.........£......... Series.........£......... INITIAL | DATE | REMARKS AX Sg.{Arthur F. Sidgreaves - MD} | 19-11-29 | Agreed Sg.{Arthur F. Sidgreaves - MD} R.{Sir Henry Royce} | 26.8.29 | Agreed FHR. Also modify for cooler valve. WOR.{Arthur Wormald - General Works Manager} | 23.8.29 | Agreed. Important. Wor.{Arthur Wormald - General Works Manager} RG.{Mr Rowledge} | 26.8.29 | Agreed Rg.{Mr Rowledge} DA.{Bernard Day - Chassis Design} | 26.8.29 | Agreed Da.{Bernard Day - Chassis Design} BY.{R.W. Bailey - Chief Engineer} | 26.8.29 | Agreed By.{R.W. Bailey - Chief Engineer} EP.{G. Eric Platford - Chief Quality Engineer} | 14.9.29 | Agreed, if tested out O.K. for valve tappet and clearances on cars. EP.{G. Eric Platford - Chief Quality Engineer} E.{Mr Elliott - Chief Engineer} | 26.8.29 | Agreed AE. PN.{Mr Northey} | 28.8.29 | Agreed PN.{Mr Northey} CWB. | 26.8.29 | Agreed C. Hs.{Lord Ernest Hives - Chair} | 23.8.29 | Agreed Hs.{Lord Ernest Hives - Chair} | ||