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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 a Rear Brake Equaliser (Foot) to reduce the sponginess of brakes by replacing lever G.52381 with G.54143.

Identifier  ExFiles\Box 172\1\  img181
Date  5th January 1931
  
RR 759 (10M) (3-7-30) BM. 6/2571.
ORIGINAL
COMPLETED 21.2.31.
STANDARDISATION of CHASSIS PARTS.
Date: 5.1.31.
Description of Parts. Rear Brake Equaliser (Foot). reducing direct braking by 25%. G.54143. lever in place of G.52381.
Origin. To reduce sponginess of brakes.
Experimental Test Report.
Road Test Report. Fitted on 18.G.IV. and ran 10,000 miles. Efficiency of Brakes were very good.
X No. X. 5330.
Drawing No. 54143.
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 over.
D Use existing stock. Alteration effective on future Chassis.
Weight of Old Part.
Cost of Old Part. £ - 2. 0d.
Weight of New Part.
Cost of New Part. £ - 2. 11d.
Difference per Car.
Difference per Car. £ Nil.
Signature from Cost Dept. that above is correct. G/Rb.{R. Bowen}16.2.31. G.18.2.31. Wor.{Arthur Wormald - General Works Manager}
Cost of Parts in Works which will be scrapped if commenced on :-
Series.........£.........
Series.........£.........
Series.........£.........
INITIAL    DATE    REMARKS
SG.{Arthur F. Sidgreaves - MD}    19.2.31    Agreed Sg.{Arthur F. Sidgreaves - MD}
R.{Sir Henry Royce}    1/2/31    Agreed R.{Sir Henry Royce}
WOR.{Arthur Wormald - General Works Manager}    16.1.31    Agreed Wor.{Arthur Wormald - General Works Manager}
C.    16.1.31    Agreed C.
RG.{Mr Rowledge}    19.1.31    Agreed Rg.{Mr Rowledge}
DA.{Bernard Day - Chassis Design}    21.1.31    Agreed Da.{Bernard Day - Chassis Design}
BY.{R.W. Bailey - Chief Engineer}    19.1.31    Agreed By.{R.W. Bailey - Chief Engineer}
EP.{G. Eric Platford - Chief Quality Engineer}    17.1.31    Agreed EP.{G. Eric Platford - Chief Quality Engineer} 18-G4. brakes inclined thump and not very "progressive". Cannot see due to above.
E.{Mr Elliott - Chief Engineer}    21.1.31    Agreed AE.
PN.{Mr Northey}    21.1.31    Agreed PN.{Mr Northey}
Hs.{Lord Ernest Hives - Chair}        Agreed Hs.{Lord Ernest Hives - Chair}
[STAMPED] 20/25 H.P. CHASSIS
  
  


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