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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).
Modifications to the brake levers and cams for the servo system on a car.

Identifier  ExFiles\Box 88\2\  scan0113
Date  18th June 1935
  
X260
To RHC.{R. H. Coverley - Production Engineer}
c. to Hs{Lord Ernest Hives - Chair}/Std.
Hs{Lord Ernest Hives - Chair}/FJH.{Fred J. Hardy - Chief Dev. Engineer}3/KW.18.6.35.

Servo on 2-B-IV.

Re our memo. Hs{Lord Ernest Hives - Chair}/FJH.{Fred J. Hardy - Chief Dev. Engineer}7/KW.17.6.35 concerning the servo on Lp{Mr Lappin}'s car. Will you please fit to the servo 6 spring rings C.010" thick to Hs.{Lord Ernest Hives - Chair}1803 as on 5-B-IV and 21-G-IV, and in addition the altered brake levers as follows to prevent the servo coming on to its stops :- (1) Lever on front brake equaliser shaft for front brake ropes to Ex.12676/7, 1.800" long. (2) Going away lever on rear brake equaliser shaft, EX.14670, 2.450" long, (3) Lever on rear brake equaliser shaft from servo cams, Hs.{Lord Ernest Hives - Chair}1801, 2.50" long.

The servo cams should be of 35° angle.

Hs{Lord Ernest Hives - Chair}/F.J.Hardy.
  
  


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