Gday
I dont really no jack about the subject but i was just cruising the
whitelein page and they had trhis to say:
Caster � What is it and why is it important?
Caster is the backward or forward tilt of the steering axis. Vehicle
manufacturers are aware of the advantages of caster and as each new
model is released the amount of caster specified increases. For example,
the VB Commodore was released with around ½ degrees positive castor;
the VT now comes standard with around 9 degrees!
Why, because the disadvantages of high levels of castor are being
overcome. Rack and pinion steering means less play, lower Ackerman
levels, smaller scrub radius (zero is now very common), better and lower
profile radial tyres means less sidewall deflection and higher tolerance
to
greater slip angles. But the greatest obstacle, that of heavy steering
effort,
has all but disappeared with the universal acceptance of power steering.
That�s why Whiteline developed a range of adjustable radius rods for
Commodore, which allow an additional 2.5deg positive caster on VB to VS.
High levels of positive caster equate to dynamic negative camber on turn
when you need it most. (Have a look at the
front wheels of a Mercedes or Audi when parking.) Whiteline continues to
put heavy emphasis on additional positive
caster when designing new suspension packages.
Pele.
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