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 the material for front road springs.
| Identifier | ExFiles\Box 171\1\ img153 | |
| Date | 3rd October 1927 | |
| RR 755 REVISED (10H) (DE 649 9-12-26) 5M. 2/1157. STANDARDISATION of CHASSIS PARTS. Description of Parts. MATERIAL FOR FRONT ROAD SPRINGS. Origin. To improve reliability and reduce cost. Experimental Test Report. It is proposed to use Silico Manganese steel in place of Chrome Vanadium. All road springs on pre-war cars were made in this material. U.S.A. springs are also made in this steel. Road Test Report. Comparative tests on the bumping test shew that springs made in this material give a longer average life than the present ones. [Checklist Section] 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 and Weight Section] Weight of Old Part. Weight of New Part. Difference per Car. Cost of Old Part. £ Cost of New Part. £ Difference per Car. £ Signature from Cost Dept. that above is correct. Cost of Parts in Works which will be scrapped if commenced on:- Series.......£........ Series.......£........ Series.......£........ [Approval Table] INITIAL | DATE | REMARKS BJ. | | Completed not sent out. Sheet not returned from BJ Hs{Lord Ernest Hives - Chair}/hs.{Lord Ernest Hives - Chair} R.{Sir Henry Royce} | 4.10.27 | Perhaps the longer life of the American springs is due to the use of thinner plates, rather than other items of design or materials. Can we confirm this easily R.{Sir Henry Royce} WOR.{Arthur Wormald - General Works Manager} | 4.10.27 | Agreed. Wor.{Arthur Wormald - General Works Manager} URGENT. RG.{Mr Rowledge} | 7.10.27 | Agreed. Rg.{Mr Rowledge} DA.{Bernard Day - Chassis Design} | 8.10.27 | Agreed DA{Bernard Day - Chassis Design} BY.{R.W. Bailey - Chief Engineer} | 4.10.27 | Agreed. BY.{R.W. Bailey - Chief Engineer} EP.{G. Eric Platford - Chief Quality Engineer} | 4.10.27 | Agreed. EP.{G. Eric Platford - Chief Quality Engineer} E.{Mr Elliott - Chief Engineer} | 8.10.27 | Agreed. E.{Mr Elliott - Chief Engineer} PN.{Mr Northey} | | CWB. | 10.10.27 | Agreed. CWB. HS.{Lord Ernest Hives - Chair} | 3.10.27 | Agreed. Hs.{Lord Ernest Hives - Chair} [Overlaid green stamp: PHANTOM CHASSIS] | ||