| Re: bump steer
Bill
Jac Mac makes the most relative point here. The upper and lower wishbones are swinging in different radii, also the steer arm connector has its own radius. The trick here is to make sure that the tie rod swings in a radius that does not move the steering arm out or in during the suspension bump or droop, causing bump steer. I would map out your suspension points, as close as you can at the pivots of the wishbones, ball joints and steering ball joint (or rod end if applicable), this will give you a very close approximation of the pivot width at the inner rack joints. From there you can cut your tie rods to size set the toe and shim the rack (or the outer tie rods) to take out the bump, or most of it. It may be difficult to take measurements of your pivot points with chassis members etc. in your way, but it is possible. If you need further help I may be able to e-mail you some basic front end diagrams showing the critical points that need to be considered.
Good Luck
Phil |