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 showing the mechanical efficiency of a Marles Type L7 steering column under different loads.

Identifier  ExFiles\Box 28\3\  Scan125
Date  12th October 1934
  
HS{Lord Ernest Hives - Chair} 1556
MECHANICAL EFFICIENCY OF MARLES TYPE L7
STEERING COLUMN.
STATIC EFFICIENCY AT MID POSITION OF TRAVEL.
GEAR LUBRICATED WITH MOBILOIL D.{John DeLooze - Company Secretary}
PENDULUM LEVER 10.15" LONG.
MID POSITION RATIO 15 : 1.
2 3/4 TURN CAM. HELIX ANGLE - 11.78°
EFFICIENCY %
LOAD AT END OF PENDULUM LEVER - LBS.
FORWARD
REVERSE
F.A.H
12/10/34
  
  


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