What is wrong with the double hole on the passenger side setup? Is it not as good as the Ackerman steering principal?
Dylan
Dylan, I will answer your quote, with a quote.

Still in the process of trying to figure out what the issues with double holes are.
kevinmrowland said:
I had another conversation with Brian at 4X4Labs today and we talked more about the double hole limitations on the passenger arms. It turns out that most of the issues have to do with not being able to fit the two holes on a hysteer (bent up) arm, once we started talking about a flat, or slightly dropped arms there was a glimmer of hope.
He will be talking it over with Luke and calling me back, let you all know what I find out.
Trapper50cal said:
Thank you very much, those pics are great.
You are certainly very close to sprung over, but even still, it looks like your tie and relay rods would contact your frame/oil pan before your bump stops met your axle.
You could remedy this by measuring to see if there would be contact, and extending the bump stops.
On my (and the majority of others on here) SU those arms would put the rods way to close to the frame and we dont have enough room to extend the bump stops.
And remember, just because nothing makes contact when an individual wheel is fully stuffed, does not mean that you are good. You need to make sure that nothing will contact when the whole axle is fully stuffed (ie, both springs fully compressed to the bumps). Dont ask me how I know.
REKCUT said:
Trapper, i can tell how the two rods connect. its hidden in the picks.
The passenger arm has two hole on the flat part. All-pros web site shows a pic of just the arms.
FJ40Jim said:
Ackerman is the steering arm angle. Where the drag link attaches to the frt end is irrelevant to that measurement.
Bump steer, OTOH, is definitely effected by drag position.
I'll just go with Jim on this one.

Is there a basic theory behind how relay position affects bump steer that you could easily share with us?