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).
Specification sheet for a clutch spring, including dimensions and load ratings.

Identifier  ExFiles\Box 169\4\  img139
Date  1st March 1933
  
Hs{Lord Ernest Hives - Chair} 938
DIA OF WIRE .104
INSIDE DIA OF HELIX .270
4 WORKING COILS WITH 3/4 COIL GROUND
SQUARE EACH END) TOTAL COILS 5 1/2
LOAD WITH ~ .100 COMPRESSION 84 lbs
FREE LENGTH 1.175" + 25
RATING OF 840 lbs / IN TO BE ADJUSTED
BY TYPE OF END COILS
SPRING - PER CLUTCH RR&H 299

Stamp:
ROYCE, LTD.
DRAWING ROOM
MAR 1 1933
DERBY.

12 OFF
  
  


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