On Mon, 23 Jan 2012 09:43:41 -0000, "dennis@home"
wrote:

"Jim K" wrote in message
...

Can changing ARB bushes affect tracking for e.g.?

If the old bushes had collapsed then the suspension angles will be different
with new bushes.

It's a pure anti roll bar in the conventional sense (spring/torsion
bar linked to a suspension arm coupled through to an opposing wheel)
it doesn't affect the geometry in terms of toe in or toe out at a
particular amount of suspension movement from full bounce to full
droop at all.

Measure the toe at normal ride height

Alter the ride height by jacking the vehicle body or compressing the
suspension with some ratchet straps

Normal ride height toe = x
full bounce toe = x + y
full droop toe = x - z

Take the anti roll bar off and test again

The measurements of toe will be identical

Fit the anti roll bar with no bushes and very loose bolts and test
again

The measurement of toe will be identical

Fit new bushes on one side and cut the anti roll bar with a hacksaw
and test again

The measurement of toe will be identical

y and z can be positive or negative depending on amongst other things
the steering rack height and the position of the steering arms in
space.

The shape, material, spring rate, bush characteristic mounting, and
everything associated with the anti roll bar make absolutely bugger
all difference to the toe readings.

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