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).
Analysis of vehicle handling, with a graph plotting steering angle against lateral acceleration to show understeer and oversteer characteristics.

Identifier  ExFiles\Box 170\3\  img081
Date  21th May 1936 guessed
  
makes little difference as between 110 ft radius at 25 m p h and say 990 ft radius at 75 m p h.{Arthur M. Hanbury - Head Complaints} If there is a difference our tests have not been good enough to bring it out.

The transit work is not so useful as the steering angle part of the job. Slip, angle and roll angle readings serve principally to explain vagaries in the steering angle.

Plotted against decimals of g, the charts of steering angle 'will look like :-

Graph Text:
Stg. ANGLE
i.e. MEAN ANGLE OF
STRONG UNDERSTEER
Too Much REAR STABILIZER
MODERATE UNDERSTEER
ACKERMANN ANGLE
MODERATE OVERSTEER
STRONG OVERSTEER

Axis Values:
10°, 7.5°, 5.0°, 2.5°, 0°
0, .1g, .2g, .3g, .4g, .5g, .6g
  
  


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