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 chassis parts, specifically Firths springs.
| Identifier | ExFiles\Box 52\2\ Scan096 | |
| Date | 9th April 1924 | |
| RR 755 (10H) (SL391 2-11-23) MP 281297 f4479 COMPLETED 9.5.24. STANDARDISATION of CHASSIS PARTS. Date 9.4.24. Description of Parts. FIRTHS SPRINGS. Origin. Further source of supply. Experimental Test Report. The latest Firths springs 43" long, are giving 30% longer life on the bump test compared with Woodheads 42" springs. The results are also very consistent. We have completed 150 hours running on the bump test. see report attached. Road Test Report. Set of latest front springs run 6000 miles in France on 40/50 Another has run 2000 miles in France on 40/50 We have had no failures on the road with these springs. Right Column: X No. [crossed out] Drawing No. 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 Cost of Parts in Works which will be scrapped if commenced on:- Series........£........ Series........£........ Series........£........ Weight of Old Part. Weight of New Part. Difference per Car. Cost of Old Part. £ 23. 0. 0 Cost of New Part. £ 27. 5. 0 Difference per Car. £ 4. 5. 0 increase. Signature of Mr. De LOOZE that above is correct. My/R ns. {Norman Scott} 5.5.24. SIGNATURES, DATE, REMARKS MR. JOHNSON, 8 May, agreed Johnson MR. B. JOHNSON, 6.5.24, agreed MR. ROYCE, 14.4.24, Agreed. FHR. The still further development to 45" should give a further improvement MR. WORMALD, 10.4.24, Agreed. Wor. {Arthur Wormald - General Works Manager} MR. ROWLEDGE, 10.4.24, Agreed. Rg. {Mr Rowledge} MR. DAY, 12.4.24, Agreed. Da. {Bernard Day - Chassis Design} MR. BAILEY, 11.4.24, Agreed. BY. {R.W. Bailey - Chief Engineer} MR. PLATFORD, 10.4.24, Agreed. EP. {G. Eric Platford - Chief Quality Engineer} MR. ELLIOTT, 12.4.24, Agreed. E. {Mr Elliott - Chief Engineer} MR. NORTHEY, 17.4.24, Agreed. PN. {Mr Northey} MR. HIVES, 5.5.24, Agreed. E. {Mr Elliott - Chief Engineer} Hives. | ||