That is correct. The upper control arm is shorter and at more of an angle than
the lower arm which is almost horizontal. As the bars are cranked, the
geometry causes the caster to pull in towards the top (If I'd paid attention in
High School Geometry class, I'd know the formula for it). Lowering it would
have the opposite effect. There are 2 bolts that hold the upper control arm
shaft to the frame bracket with about an half inch of adjustment there which
allows the caster to be set. We've seen them come loose while descending down
Pikes Peak (I have photos of the DML NGTG road service on Dom Mallet's Dakota
at the half-way point).
Walt
In article <f41ff3ad0705250328m27797694pe7f0423fee3ab331@mail.gmail.com>,
radon220@gmail.com ("Don Rey") writes:
>
> Caster, btw, is the "wheel slant" that you're talking about, just to
> clarify. It's too early in the morning for me to remember whether your
> caster increases or decreases (which way they slant) when you crank
> the bars. After the morning cobwebs clear, think about the upper vs
> lower control arm lengths and what would happen when you pivot the LCA
> at the torsion bar mount.
>
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