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 the use of Firths 'Silchrome' steel for engine valves.
| Identifier | ExFiles\Box 54\3\ Scan205 | |
| Date | 21th August 1924 | |
| RR 755 (10M) (SL391 2-11-23) MP 281297 STANDARDISATION of CHASSIS PARTS. COMPLETED 8.9.24. Date 21.8.24. X No. 4634 Drawing No. Part List Description of Parts. FIRTHS 'SILCHROME' STEEL FOR VALVES. Origin. To improve design. Experimental Test Report. Firths Silchrome is made to the same specification as Thompsons Silchrome of U.S.A. Tests show it to be definitely better than the present material we are using. Road Test Report. Run 12,000 miles on 65-PK. Run 8,000 miles on 98-NK. Run 6,000 miles on 9-PK. No TROUBLES. [STAMPED DIAGONALLY: PART OF CHASSIS] 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 Weight of Old Part. Weight of New Part. Difference per Car. Cost of Old Part. £ 2. 15. 0 Cost of New Part. £ 2. 11. 0 Difference per Car. £ . 4. 0 saving. Cost of Parts in Works which will be scrapped if commenced on:- Series.........£......... Series.........£......... Series.........£......... Signature of Mr. De LOOZE that above is correct. My/Rns. 4.9.24. SIGNATURES, DATE, REMARKS MR. JOHNSON, , B Johnson agreed Fire ahead &. MR. B. JOHNSON, , MR. ROYCE, 29.8.24, Agreed. FHR. URGENT. MR. WORMALD, 22.8.24, Agreed. Wor.{Arthur Wormald - General Works Manager} MR. ROWLEDGE, 21.8.24, Agreed. Rg.{Mr Rowledge} MR. DAY, 22.8.24, Agreed. Da.{Bernard Day - Chassis Design} MR. BAILEY, 22.8.24, Agreed. BY.{R.W. Bailey - Chief Engineer} MR. PLATFORD, 22.8.24, Agreed. EP.{G. Eric Platford - Chief Quality Engineer} MR. ELLIOTT, 28.8.24, Agreed. E.{Mr Elliott - Chief Engineer} MR. NORTHEY, 22.8.24, Agreed. PN.{Mr Northey} MR. HIVES, 4.9.24, Agreed. E.Hives. | ||