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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 of experimental results for Hispano-Suiza steering leverage, comparing individual stub axles and their mean against another series.

Identifier  ExFiles\Box 67\3\  scan0113
Date  6th April 1928
  
HISPANO-SUIZA STEERING LEVERAGE. EXPL. RESULTS.
STEERING LEVERAGE. INSTANTANEOUS RATIO = ROTATION OF STEERING WHEEL / ROTATION OF STUB AXLE.
Y-AXIS: 0 to 22
X-AXIS: 400°, 300°, 200°, 100°, 0, 100°, 200°, 300°, 400°
ROTATION OF STEERING WHEEL.
L.H. LOCK.
R.H. LOCK.
LEGENDS:
HISPANO NR SIDE STUB AXLE
HISPANO. MEAN OF BOTH STUB AXLES EXPL. RESULTS.
HISPANO OFF SIDE STUB AXLE
EA.C.II SERIES MEAN OF BOTH STUB AXLES EXPL. RESULTS
STAMP BOX:
ROLLS-ROYCE LTD.
PRINT IS. C. OM
6-APR 1928
DERBY
  
  


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