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 parts document for Ferodo BZ brake linings to reduce squeaking.
| Identifier | ExFiles\Box 85\1\ scan0348 | |
| Date | 4th June 1937 | |
| RR 755B (10H) 26074 2-11-36 WHK 24999 COMPLETED 21.8.37. BENTLEY STANDARDISATION of PARTS. Date 4.6.37. X No. 206. Drawing No. SIMILAR TO GB.750, 751, 752, 754. G.100,789. Description of Parts: BRAKE LININGS MADE OF FERODO BZ ON ALL BRAKES (INCLUDING HAND BRAKE) Origin: To reduce the tendency to squeak. Report of Experimental Test: Has run 12,000 miles in France on 3-B-IV and 14,000 miles in England on B-23-AE. Neither car has developed brake squeaks. The lining is very hard wearing. MATERIAL: £ s. d.{John DeLooze - Company Secretary} LABOUR: £ s. d.{John DeLooze - Company Secretary} CHARGES: £ s. d.{John DeLooze - Company Secretary} TOTAL: £ s. d.{John DeLooze - Company Secretary} Cost of Old Part Cost of New Part Nett { Increase / Decrease NO DIFFERENCE Signature from Cost Dept. that above is correct. G/RL 6.7.37. INITIAL | DATE | REMARKS SG.{Arthur F. Sidgreaves - MD} | 20-8-37. | Agreed Sg.{Arthur F. Sidgreaves - MD} HS.{Lord Ernest Hives - Chair} | | Agreed Hs.{Lord Ernest Hives - Chair} C. | 19.7.37. | Agreed C. E.{Mr Elliott - Chief Engineer} | 3.8.37. | Agreed E.{Mr Elliott - Chief Engineer} It is assumed that all necessary tests have been made with regard to checking the new lining for brake fade, effect of water etc. DA.{Bernard Day - Chassis Design} | 13.7.37. | Agreed Da.{Bernard Day - Chassis Design} BY.{R.W. Bailey - Chief Engineer} | 9.7.37. | Agreed By.{R.W. Bailey - Chief Engineer} EP.{G. Eric Platford - Chief Quality Engineer} | | SFT{Mr Swift} RHC.{R. H. Coverley - Production Engineer} | 9.7.37. | Agreed RHC.{R. H. Coverley - Production Engineer} MX.{John H Maddocks - Chief Proving Officer} | 9.7.37. | Agreed Mx.{John H Maddocks - Chief Proving Officer} RM.{William Robotham - Chief Engineer} | | | ||