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).
Graph plotting load against movement to determine the efficiency and hysteresis of a torsion shaft for a 20-25 front axle.

Identifier  ExFiles\Box 13\1\  01-page76
Date  21th December 1934 guessed
  
PERCENTAGE EFFICIENCY
100%
90
80
EFFICIENCY
88.7%
EFFICIENCY OF TORSION SHAFT IN 20-25
FRONT AXLE
HYSTERESIS READINGS TAKEN WITH SPRING
BALANCE IN 'SECONDARY' GIVING DEFINITE
SLIP IN SHAFT.
EFFICIENCY IS CONSTANT OVER MEASURABLE RANGE
BEING EQUAL TO 88.7%
MOVEMENT - THOUSANDTHS OF AN INCH
500
400
300
200
100
LOAD - LBS.
0
225
325
425
525
625
  
  


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