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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 clutch springs, pedal, fingers, and operating lever.

Identifier  ExFiles\Box 171\2\  img084
Date  6th September 1932
  
RR 78B (10H) (30408, 21-4-32) BM. 3/8382 4.
COMPLETED 14.2.33.
STANDARDISATION of CHASSIS PARTS.
Date: 6.9.32.
X No. 7300
Drawing No.
Part List
Description of Parts: CLUTCH SPRINGS Hs.{Lord Ernest Hives - Chair}652, CLUTCH PEDAL F.84379 CLUTCH FINGERS Hs.{Lord Ernest Hives - Chair}666, CLUTCH OPERATING LEVER Hs.{Lord Ernest Hives - Chair}667.
Origin: To enable 15% stronger clutch springs to be used, thereby reducing wear of the fabrics, without increasing the clutch pedal pressure.
Experimental Test Report: Springs were fitted to 19-EX. 10,000 miles trial and eliminated the wear that was occurring with the standard springs.
Road Test Report: Complete scheme fitted to 58-GN.
Weight of Old Part.
Cost of Old Part: £ 4. 2. 8.
Weight of New Part.
Cost of New Part: £ 4. 1. 4.
Difference per Car.
Difference per Car: £ 0. 1. 4. Increase.
Cost of Parts in Works which will be scrapped if commenced on:-
Series.........£..........
Series.........£..........
Signature from Cost Dept. that above is correct: G/Rb.{R. Bowen} 9.2.33. G.10.2.33. SwT
TABLE:
INITIAL | DATE | REMARKS
SG.{Arthur F. Sidgreaves - MD} | 13.2.33. | Agreed Sg.{Arthur F. Sidgreaves - MD}
R.{Sir Henry Royce} | 17/9/32 | Agreed JR.{Mr James Royce}
WOR.{Arthur Wormald - General Works Manager} | 7.9.32. | Agreed Wor.{Arthur Wormald - General Works Manager}
C. | 7.9.32. | Agreed C.
RG.{Mr Rowledge} | 13.9.32. | Agreed Rg.{Mr Rowledge}
DA.{Bernard Day - Chassis Design} | 10.9.32. | Agreed Da.{Bernard Day - Chassis Design}
BY.{R.W. Bailey - Chief Engineer} | 7.9.32. | Agreed By.{R.W. Bailey - Chief Engineer}
EP.{G. Eric Platford - Chief Quality Engineer} | 19.9.32. | Agreed (Stopping of clutch requires attention) EP.{G. Eric Platford - Chief Quality Engineer} & MX.{John H Maddocks - Chief Proving Officer}
E.{Mr Elliott - Chief Engineer} | 8.9.32. | Agreed AE.
PN.{Mr Northey} | 19.9.32. | Agreed PN.{Mr Northey}
Hs.{Lord Ernest Hives - Chair} | | Agreed Hs.{Lord Ernest Hives - Chair}
  
  


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