Parallel 4 Link Spacing

[Norm Peterson]

In your specific case, the narrower you set the wider-spaced pair of links - either the uppers or the lowers - the greater the steer effect for any given amount of compliance gets. Compliance here includes all of the link bushing compliances and at least the link pickup point bracket flexibilities.

There isn't any theoretical difference as far as either roll center height or axle roll steer are concerned for either wide-set or narrow-set plan-view link spacing, as the convergence points of the upper and lower links are both at "infinity" either way. Small fabrication deviations from perfect plan view parallelism won't affect this much.



For both structural and control of axle steer reasons, you're better off going wide with the links and making the rest fit to that. There are other ways to recover any roll stiffness lost to less than optimum bar mount/endlink locations.


But unless you're using at least one birdcage I'm afraid that the four links and the axle are going to make for a pretty big "swaybar" all by themselves.


Norm