Rolls-Royce Archives
         « Prev  Box Series  Next »        

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).
Table of theoretical and actual loads for various hydraulic damper springs.

Identifier  ExFiles\Box 68\2\  scan0186
Date  14th March 1927 guessed
  
ROLLS-ROYCE, LIMITED.
DERBY

SPRINGS FOR HYDRAULIC DAMPERS.

Piece No. Theoretical load. Actual load measured at 7½" lever.

F.75080 70 70
F.75081 75 75
F.75082 80 105 } 95
F.75148 105 110 } High pressure
F.74515 150 150 } Valve springs.
F.74869 180 190 }
F.74870 200
F.74869 92 92 }
F.76429 140 187 } 155 }

F.74391 21 25 }
F.75077 30 30 }
F.75078 35 35 } Low pressure
F.75079 40 40 } Valve springs.
F.74001 42
F.75168 80 110 }
F.75169 90 90 }
F.75902 68 68 }
F.76548 140 ? }

To find equivalent pressure on rear damper of
40/50 HP. multiply above loads by .58 for 20 HP. by .650.

Hs{Lord Ernest Hives - Chair}/Rm.{William Robotham - Chief Engineer}
  
  


Copyright Sustain 2025, All Rights Reserved.    whatever is rightly done, however humble, is noble
An unhandled error has occurred. Reload 🗙