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).
Specifications for a Clutch Spring, Per II.

Identifier  ExFiles\Box 169\4\  img092
Date  6th July 1932
  
Hs{Lord Ernest Hives - Chair} 667
DIA OF WIRE .176
INSIDE DIA OF HELIX .640 - 5
8 WORKING COILS WITH 1/2 A COIL GROUND
SQUARE EACH END MAKING A TOTAL OF 9 COILS
LOAD AT 1.775 TO BE 177 lbs [70000 lbs/sq"]
FREE LENGTH 2.310
R= 330 lbs /IN
S= 126000 lbs/sq"/IN
ROLLS-ROYCE LTD.
PRINT ROOM
JUL 6 1932
DERBY.
CLUTCH SPRING
PER II
  
  


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