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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 Bentley front brake drums, substituting bolts in place of studs to prevent them from working loose.

Identifier  ExFiles\Box 84\2\  scan0089
Date  11th January 1934
  
RR 785B (SH) (S2674, 16-10-33) BM. 3/262/6.
X 206.
Completed 6.2.34
BENTLEY STANDARDISATION of PARTS.
Date 11.1.34.
X No. 206.
Drawing No. Sch 3920.
Part List
Description of Parts. BENTLEY FRONT BRAKE DRUMS.
Origin. Substituting Bolts in place of Studs to prevent drums working loose.
Report of Experimental Test.
The Drums on 4-B-IV have been fitted up with this scheme and severe braking tests have been carried out on the road with no sign of any bolts becoming loose.
Weight of Old Part. Cost of Old Part. £ - 10-9
Weight of New Part. Cost of New Part. £ - 6-4
Difference per Car. Difference per Car. £ - 4-5 DECREASE.
Signature from Cost Dept. that above is correct. G.R.A. 25-1-34.
Cost of Parts in Works which will be scrapped if commenced on:-
Series.......£.......
Series.......£.......
Series.......£.......
INITIAL | DATE | REMARKS
SG.{Arthur F. Sidgreaves - MD} | 5.2.34. | Agreed SG.{Arthur F. Sidgreaves - MD}
WOR.{Arthur Wormald - General Works Manager} | 29.1.34. | Agreed Wor.{Arthur Wormald - General Works Manager}
C. | 29.1.34. | Agreed C.
RG.{Mr Rowledge} | | Rg.{Mr Rowledge} absent.
DA.{Bernard Day - Chassis Design} | 30.1.34. | Agreed Da.{Bernard Day - Chassis Design}
BY.{R.W. Bailey - Chief Engineer} | 29.1.34. | Agreed By.{R.W. Bailey - Chief Engineer}
EP.{G. Eric Platford - Chief Quality Engineer} | 29.1.34. | Agreed EP.{G. Eric Platford - Chief Quality Engineer}
E.{Mr Elliott - Chief Engineer} | 2.2.34. | Agreed AE.
BNx | 30.1.34. | Agreed Bn.{W.O. Bentley / Mr Barrington}
SFT.{Mr Swift} | 29.1.34. | Agreed Sft.{Mr Swift}
MX.{John H Maddocks - Chief Proving Officer} | 29.1.34. | Agreed Mx.{John H Maddocks - Chief Proving Officer}
HS.{Lord Ernest Hives - Chair} | 26.1.34. | Agreed Hs.{Lord Ernest Hives - Chair}
Received stamp: J.S. 5 FEB 1934.
  
  


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