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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).
The mechanical efficiency of a La Salle steering box under static conditions.

Identifier  ExFiles\Box 22\4\  Scan019
Date  11th June 1934
  
COPY. 11.6.34.

Mechanical Efficiency of La{L. A. Archer} Salle
Steering Box.

The table below shows the efficiency of the
La{L. A. Archer} Salle steering box measured in forward and reverse
drive under static conditions.

The ratio of angular movement of the steering
wheel to that of the pendulum lever is 19.7 at the
centre of the travel.

The efficiencies below are measured at
mid-travel.

Load on Pendulum Efficiency of Transmission
Pendulum Lever Torque
Lever - lbs. lbs. ins. Forward Reverse

100 650 63.5 63.7
150 975 67.3 69.3
200 1300 70.7 72.0
250 1625 70.0 71.7
300 1950 70.7 72.6
350 2275 69.9 72.3
400 2600 70.7 72.8


Hs{Lord Ernest Hives - Chair}/F.J.Hardy.
  
  


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