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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 20/25 HP torque reaction dampers to reduce booming.

Identifier  ExFiles\Box 172\1\  img183
Date  18th December 1930
  
RR 758 (10H) (3-7-30) BM. 6/2571.
COMPLETED 3.3.31
STANDARDISATION of CHASSIS PARTS.
Date 18.12.30.
Description of Parts: Cotton 'A' Fabric Linings for Torque Reaction Dampers. 20/25 HP.
No. 634 / 5005.
Origin: To reduce booming at 48 - 52 M.P.H.
Experimental Test Report.
Fitted to 14-G4, 17-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.
[X] 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. £ - 2. 7d.
Cost of New Part. £ - 2. 7d. Wor.{Arthur Wormald - General Works Manager}
Difference per Car. £ Nil.
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} 26.2.31. G.{Mr Griffiths - Chief Accountant / Mr Gnapp} 27.2.31.
INITIAL | DATE | REMARKS
SG.{Arthur F. Sidgreaves - MD} | 2.3.31. | Agreed Sg.{Arthur F. Sidgreaves - MD}
R.{Sir Henry Royce} | 2/2/31 | Agreed R.{Sir Henry Royce}
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}
  
  


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