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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 results of the 5th test, detailing conditions, torque reaction, booms, steering, and wing jelly-ing.

Identifier  ExFiles\Box 137\4\  scan0366
Date  8th July 1931 guessed
  
contd.
-4-
5th Test.
Conditions.
Torque reaction dampers set to have a friction load of 22 lbs at a leverage of 5.25 inches.
Torque reaction.
The torque reaction caused 25% more movement of the wings. The period started at 9 MPH. maximum 10.1/2, finished at 12 MPH. The gear lever had more amplitude than the 3rd test.
Booms.
In Front Seats.
These were 10% less pronounced than the 3rd test. The periods were similar to the 3rd test.
In Rear seats.
These were hardly noticeable 5% increase than the results obtained in the second test.
Steering.
If anything, the oscillations were increased, no other features could be noted.
Jelly-ing of the front wings.
These were increased 10 to 20% with higher periods.
We have sent you a summary of these tests which we consider give the best all round results, i.e. 3rd test. We consider that no one would object to the slight booms noticed.
GWHancock.
  
  


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