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 for .375' thick front brake liners to increase their lifespan.
| Identifier | ExFiles\Box 12\5\ 05-page221 | |
| Date | 5th July 1930 | |
| RR 785 (10M) (3-7-30) BM. 6/2871. COMPLETED 7.10.30. X 7420 STANDARDISATION of CHASSIS PARTS. Date 5.7.30. Description of Parts. FRONT BRAKE LINERS .375" THICK. Origin. To increase the period before re-lining is necessary. Experimental Test Report. The present lining has to be thrown away when half worn or the rivet heads foul the drum. The proposed lining will give 80% more life. Road Test Report. Run 10,000 miles on 23-EX. Now running 10,000 miles on 24-EX. X No. 7361. 7420. 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. Weight of Old Part. Weight of New Part. Difference per Car. Cost of Old Part. £ Cost of New Part. £ Included in Std. Sheet X.3806/7350/7420 Difference per Car. £ Cost of Parts in Works which will be scrapped if commenced on :- Series..........£......... Series..........£......... Series..........£......... Signature from Cost Dept. that above is correct. INITIAL | DATE | REMARKS SG.{Arthur F. Sidgreaves - MD} | 6.10.30 | Agreed Sg.{Arthur F. Sidgreaves - MD} R.{Sir Henry Royce} | 9.7.30 | Agreed FHR. - Would our staple system of fixing be better or less costly for fixing liners?. WOR.{Arthur Wormald - General Works Manager} | 8.7.30 | Agreed Wor.{Arthur Wormald - General Works Manager} C. | 8.7.30 | Agreed C.. RG.{Mr Rowledge} | 8.7.30 | Agreed Rg.{Mr Rowledge} DA.{Bernard Day - Chassis Design} | 8.7.30 | Agreed Da.{Bernard Day - Chassis Design} BY.{R.W. Bailey - Chief Engineer} | 8.7.30 | Agreed By.{R.W. Bailey - Chief Engineer} EP.{G. Eric Platford - Chief Quality Engineer} | 9.7.30 | Agreed EP.{G. Eric Platford - Chief Quality Engineer} E.{Mr Elliott - Chief Engineer} | 12.7.30 | Agreed AE - does not this also apply to the back brake liners?. PN.{Mr Northey} | | Agreed PN.{Mr Northey} Hs.{Lord Ernest Hives - Chair} | | Agreed C. | ||