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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).
Page discussing steering characteristics and the effects of rear stabilisers, featuring a graph of steering angle curves.

Identifier  ExFiles\Box 9\7\  07-page099
Date  17th December 1937
  
-3-
the rear roll rod which was clearly the major cause of the trouble.

Fig.2 shows three curves given us by Olley. Of the first two,

(1) The La{L. A. Archer} Salle 1936 and

(2) The Oldsmobile 6 1936,

he writes "The direction of curvature of the steering angle line above .4g is profoundly important. Downward curve means a rear skid and is dangerous".

"A sudden downward curve like the La{L. A. Archer} Salle and Olds.6 is due to too much rear stabiliser and is to be avoided".

(3) is reproduced from a sketch in another letter and is described by Olley thus -

"The cock-eyed condition produced by too much rear stabiliser would be condemned in any country."

FIG 2

[Graph Text]
UNDERSTEER
OVERSTEER
SIDEWAYS G
STEERING ANGLE CURVES SUBMITTED
BY OLLEY AS TYPICAL OF BAD
STEERING CHARACTERISTICS DUE TO
TOO MUCH REAR STABILISER.
  
  


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