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Table detailing the over and under-steering properties of a Bentley III under various suspension and tyre configurations.


Identifier  ExFiles\Box 100\2\  scan0017
Date  1st January 1935 guessed
  
-4-

OVER AND UNDER-STEERING PROPERTIES OF BENTLEY III.

Case. Amount of Oversteer. Amount of Understeer.

Original rear spring layout, static
deflection of front and rear springs
5" tyres 30 lbs/sq.in. 0.12º
( 0º 7.2' )

Original rear spring layout, static
deflection of front springs 6.5", of
rear springs 5.5" tyres 30 lbs/sq.in. 0.03º
( 0º 1.8' )

Original rear spring layout, static
deflection of front springs 6.5" of
rear springs 5.5", tyres 25 lbs/sq.in. 0.08º
( 0º 4.8' )

"Anti-shake" rear spring layout, static
deflection of front and rear springs 5",
tyres 30 lbs/sq.in. 0.35º
( 0º 21' )

"Anti-shake" rear spring layout static
deflection of front springs 6.5", of
rear springs 5.5", tyres 30 lbs/sq.in. 0.21º
( 0º 12.6' )

Bentley II (present standard) front springs
2.25" static deflection, rear springs 4"
static deflection, tyres 5.50-18.00,
front tyres 35 lbs/sq.in. rear tyres 2º
30 lbs/sq.in.


For all cases inward acceleration is 0.5g.

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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).


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