Dead on with a zero Sport440.
The attached drawing shows the Ackerman geometry better than we can put it in words.

why would you get undesireable ackerman only when backing up and not when going forward???

I guess ackerman would only be noticeable when turning the car, not when going straight???

Nice illustration Race8x98

The Best ive seen and easist to understand on my Akerman problem fix adventure. Thanks!

Bob George, your right! ackerman isnt the only Geometry issue that needs to be addressed.

Getting the tierod sweep to match the combined upper and lower control arm sweep through out its range of motion is another.

Tierod length, rack height,rack position, working with imaginary lines etc.

The Easy part of a rack and pinion install is bolting one in. Making it work correctly is a whole different ball game.

Race8x98,s illustration IMO has the Ackerman part covered. In the past ive seen people post about Some imaginary lines back to the center of the axel. Couldnt make heads or tails out of it. Today , I understand it completely mike again, thanks Race

talk to someone who bought a dare racing front end with the side to side swapped ball joints

mike

i only clicked on the last post which was yours , nothing directed to or at you personally

only making a post to point out that swapping the ball joints side to side won't work and why

heating and bending them might be better but i wouldn't know