Fabricated A-Body spindle ideas and discussion

HPP said
Hotchkis eliminated the anti-dive in their A body upper arms.

I thought they did that with their E/B-Body arms, not the A-Body arms. Not that I am well versed in the Hotchkis stuff.

HPP said
The dwindling supply of OEM parts and limited reproduction s is why I would consider a fabricated arm in both upper and lower. As you point out, oval track hobby racers have created a horde of cheap parts that are easily replaced.

That might be the case. Good thing we already have a couple of options for the upper arms and one for the lower even if the ball joint isn't what you are suggest we need.

HPP said
The upper control arm pivot point isn't impacted by caster, but it is impacted by anti-dive. Since the front pivot is higher that the rear, you have to calculate the dynamic pivot. T=Looking down on the control arm, this is done with a straight line between the front and rear pivot. Then create a 90* intersection on this line that extend to the center of the upper ball joint. This position is the dynamic pivot of the upper control arm.

Yep, that's what I did. There is some fudge to it, but the functional pivot is in based on the sloped pivot line.

HPP said
Overall your layout appears to be on the right path. When I plotted my Challenger, my roll center ended up at 5.5" with 26" tires and the earlier disc standard height spindle. Since I can't access the program, I don't have data on my various pivot point positions. I did drop it down until the lower arm was at zero ride height, or the ball joint is perfectly level with the inner pivot.

:thumbsup: