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 document regarding the use of Silchrome steel for valves on 40 HP and 20 HP chassis.
| Identifier | ExFiles\Box 48\4\ Scan118 | |
| Date | 30th October 1923 | |
| STANDARDISATION of CHASSIS PARTS Date 30.10.23. X No.2764 4226 Drawing No. Part List Description of Parts. 40 HP. and 20 HP. CHASSIS. MATERIAL FOR VALVES. Origin: To increase life. Experimental Test Report. Tests on aero engines have proved that Silchrome steel is a considerable improvement over our present steel. (Handwritten: WOF) Road Test Report. (Stamp: AM) Springfield have tested these valves on 40/50 HP. cars and find them an improvement. There is less wear with this material. (Handwritten: To what extent have Springfield tested?) Weight of Old Part. £ Weight of New Part. £ Difference per Car. £ Cost of Old Part. £ Cost of New Part. £ Difference per Car. £ No difference. Signature of Mr. De LOOZE that above is correct. My/JW 30.10.23. SIGNATURES | DATE | REMARKS MR. JOHNSON | 27 Nov | Johnson agreed MR. B. JOHNSON | 27.11.23 | agreed. Presume no scrap. BJ MR. ROYCE | 17.11.23 | Agreed. FHR. Understand we have made tests which shews decided improvement and that we are making further and continuous tests both on car and aero engines to prove that there is no other direction in which the steel may fail such as mechanical brittleness after repeated reheatings. MR. WORMALD | 30.10.23 | Agreed. MR. ROWLEDGE | 30.10.23 | Agreed. Rg.{Mr Rowledge} MR. DAY | 1.11.23 | Agreed. Da.{Bernard Day - Chassis Design} MR. BAILEY | 30.10.23 | Agreed. BY.{R.W. Bailey - Chief Engineer} MR. PLATFORD | 31.10.23 | Agreed. EP.{G. Eric Platford - Chief Quality Engineer} MR. ELLIOTT | 3.11.23 | Agreed. E.{Mr Elliott - Chief Engineer} MR. NORTHEY | 31.10.23 | Agreed. Provided that Springfields tests in the absence of ours are sufficient. PN.{Mr Northey} MR. HIVES | 21.11.23 | Agreed. E.Hives. 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.........£......... Top left: R.R. 755 (10M) (SL 72 18-7-23) MP 274954 Top middle: X4226 Top right: COMPLETED 27/11/23 | ||