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 Lake & Elliott cast iron brake drums to improve braking.
| Identifier | ExFiles\Box 171\2\ img034 | |
| Date | 9th June 1932 | |
| RP 755 (10M) (18120, 13-10-31) BM. 3/750S. COMPLETED 24.9.32. ORIGINAL. STANDARDISATION of CHASSIS PARTS. Date 9.6.32. X No. 7360 (struck out) 4612 Drawing No. Part List Description of Parts: LAKE & ELLIOTT CAST IRON DRUMS. Origin: To improve braking. Experimental Test Report: These drums show excellent wearing qualities and improve the efficiency of the brakes when stopping from high speeds. Needed on the 25 HP. Road Test Report: Run 6,000 miles on 19-EX and various distances on other experimental cars with consistent improved results. Weight of Old Part. Cost of Old Part. £ 5-0-9d. Weight of New Part. Cost of New Part. £ 8-1-4d. Difference per Car. £ 3-0-7d. Increase. Cost of Parts in Works which will be scrapped if commenced on:- Series.........£......... Series.........£......... Series.........£......... Signature from Cost Dept. that above is correct. G/Rb{R. Bowen}/N.22.9.32.G.22.9.32. [Approval Table] INITIAL, DATE, REMARKS SG.{Arthur F. Sidgreaves - MD}, 23.9.32., Agreed Sg.{Arthur F. Sidgreaves - MD} R.{Sir Henry Royce}, 13/10/32, Experimental Pleased to Agree. LRR only fear cracked drums. WOR.{Arthur Wormald - General Works Manager}, 13.6.32., Agreed WOR.{Arthur Wormald - General Works Manager} C., 13.6.32., Agreed C. RG.{Mr Rowledge}, 15.7.32., Agreed Rg.{Mr Rowledge} DA.{Bernard Day - Chassis Design}, 14.6.32., Agreed Da.{Bernard Day - Chassis Design} BY.{R.W. Bailey - Chief Engineer}, 13.6.32., Agreed By.{R.W. Bailey - Chief Engineer} EP.{G. Eric Platford - Chief Quality Engineer}, 15.6.32., Agreed EP.{G. Eric Platford - Chief Quality Engineer} and Mx.{John H Maddocks - Chief Proving Officer} to test. E.{Mr Elliott - Chief Engineer}, 17.6.32., Agreed AE. PN.{Mr Northey}, 15.6.32., Agreed PN.{Mr Northey} HS.{Lord Ernest Hives - Chair}, 15.6.32., Agreed Hs.{Lord Ernest Hives - Chair} [The document is stamped 'CANCELLED' in large purple letters across the center.] | ||