Rolls-Royce Archives
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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).
Secret memo regarding modifications to the brake operating system leverage.

Identifier  ExFiles\Box 73\2\  scan0328
Date  4th November 1924
  
To BY.{R.W. Bailey - Chief Engineer} from DA.{Bernard Day - Chassis Design}
c. to CJ. RG.{Mr Rowledge} Hs.{Lord Ernest Hives - Chair}
X. 9940
S E C R E T.
DA{Bernard Day - Chassis Design}3/M11.4.24.
E.A.C.
RE. BRAKE OPERATING SYSTEM M.{Mr Moon / Mr Moore} DES. 60. X. 9940
In view of our experience of the car with the agreed scheme of braking on Tuesday last we think we should be prepared to find that a greater leverage is required between the pedal and the brakes than the existing 40/50., and we suggest that we should have a multiplying lever as shewn on N.sch.1783, but with proportions enabling us to vary this leverage with a view to ascertaining the best compromise between pedal pressure and the allowance for wear.
We send N.sch.1787 herewith.
DA.{Bernard Day - Chassis Design}
  
  


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