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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).
Proposal to increase the thickness of rear brake shoe linings for a 20 HP 10,000-mile test.

Identifier  ExFiles\Box 5a\2\  02-page153
Date  6th February 1930
  
BY.{R.W. Bailey - Chief Engineer} From Ds.
c. to Hs.{Lord Ernest Hives - Chair}

x5840 Da.{Bernard Day - Chassis Design}2/WJ.6.2.30.

20 HP. for 10,000 Mile Test.
REAR BRAKE SHOE LININGS

x5840
x7368
x5360

We wish to increase the thickness of the Ferodo lining on the rear brake shoes from .312 to .375.

We suggest this should be done by reducing the depth of the aluminium tube .063, thickening the top flange slightly more than .050.

INCREASED SAY .075
REDUCED .062
  
  


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