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 material for valves on 40/50 HP and 20 HP chassis to increase life.
| Identifier | ExFiles\Box 171\3\ img221 | |
| Date | 30th October 1923 | |
| R.R. 755 (10M) (SL 72 18-7-23) MP 274954s. ORIGINAL COMPLETED 28.11.23. STANDARDISATION of CHASSIS PARTS. Date 30.10.23. Description of Parts. 40/50 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. Road Test Report. Springfield have tested these valves on 40/50 HP. cars and find that they are an improvement. There is less wear with this material. X No. 4226 Drawing No. 2764 Part List 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. £ Cost of Old Part. £ Weight of New Part. £ Cost of New Part. £ Difference per Car. £ No difference. 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/JW 30.10.23. SIGNATURES DATE REMARKS MR. JOHNSON 27.11.23 Agreed. CJ. MR. B. JOHNSON 27.11.23 Agreed. BJ. Presume no scrap. MR. ROYCE 19/11/23 Agreed FHR I understand we have made tests which show decided improvement and that we are making further searching tests both in cars & on engines to prove that there is no other constituent in which the steel may fail, such as mechanical strength after repeated heating MR. WORMALD 30.10.23 Agreed. Wor.{Arthur Wormald - General Works Manager} MR. ROWLEDGE 30.10.23 Agreed. Re. 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 AE 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.{Mr Elliott - Chief Engineer} Hives. | ||