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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 cotton 'A' fabric linings for Torque Reaction Dampers on the 20/25 HP.

Identifier  ExFiles\Box 137\4\  scan0240
Date  18th December 1930
  
RR 755 (10H) (3-7-30) BM. 6/2571.
√634 COMPLETED 3.3.31.
STANDARDISATION of CHASSIS PARTS.
Date 18.12.30.
X No. 634.
Drawing No. 5005.
Part List

Description of Parts.
Cotton 'A' Fabric Linings for Torque Reaction Dampers, 20/25 HP.

Origin.
To improve reduce booming at 48 - 52 M.P.H.

Experimental Test Report.
Fitted to 14-G4, 17-G4, 18-G4., with beneficial results.
The original damper setting is retained longer than when Ferodo friction discs are used.

Road Test Report.
At present completing 10,000 miles test on 18-G4.

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. £0-2-7
Cost of New Part. £0-2-7 Wks.
Difference per Car. £ none

Signature from Cost Dept. that above is correct. GRK 24/1/31. Gornish 24/1/31

Cost of Parts in Works which will be scrapped if commenced on :-
Series..........£.........
Series..........£.........
Series..........£.........

INITIAL DATE REMARKS
SG.{Arthur F. Sidgreaves - MD} 2-3-31 Agreed Sg{Arthur F. Sidgreaves - MD}
R.{Sir Henry Royce} 21.2.31 Agreed FHR.
WOR.{Arthur Wormald - General Works Manager} 19.2.31 Agreed Wor.{Arthur Wormald - General Works Manager}
C. 22.12.30 Agreed C.
RG.{Mr Rowledge} 19.12.30 Agreed Rg.{Mr Rowledge}
DA.{Bernard Day - Chassis Design} 22.12.30 Agreed Da.{Bernard Day - Chassis Design}
BY.{R.W. Bailey - Chief Engineer} 22.12.30 Agreed BY.{R.W. Bailey - Chief Engineer}
EP.{G. Eric Platford - Chief Quality Engineer} 19.12.30 Agreed EP.{G. Eric Platford - Chief Quality Engineer} and MX.{John H Maddocks - Chief Proving Officer}
E.{Mr Elliott - Chief Engineer} 22.12.30 Agreed AE.
PN.{Mr Northey} 23.12.30 Agreed PN.{Mr Northey}
HS.{Lord Ernest Hives - Chair} Agreed Hs{Lord Ernest Hives - Chair}/Rn.{Mr Robinson} (Hs.{Lord Ernest Hives - Chair} away)

[STAMPED TEXT]
Received
J.S.
28 FEB 1931

[STAMPED TEXT]
25 CHASSIS
  
  


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