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).
Vehicle braking and suspension performance, focusing on hydraulic dampers and pitching issues.

Identifier  ExFiles\Box 82\2\  scan0083
Date  11th June 1934 guessed
  
[Margin Note: GRY{Shadwell Grylls}]
required on the foot pedal, there is very little front braking. which points to the servo rather than the BZ brake linings

Hydraulic Dampers.

[Margin Note: LFS]
For the French roads the maximum damping is required to prevent pitching
Pitching occurred several times at speed when the max. load was not desirable With the soft position going over cobble stone at approx 20 MPH excessive pitching on the front was frequent. half unit load immediately checked it. but the load was too much, for comfort of riding. In other words the car rides too hard with medium control over cobble stones, but is not sufficiently checked with the minimum control. The high H maximum unit pressure is only required for maximum speeds. for control and comfort in riding.
  
  


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