'71 Camaro Control Arm Redesign

[searly71]

Thanks a lot Marcus, I appreciate it. When you said anti-squat, did you mean anti-dive? I thought squat was when the rear end shifts downward under hard acceleration? Yeah, the more I look at this, the more it seems the only thing I can substantially change is the caster. I think maybe I'll redo this design when I do a complete resto/mod and have the front of the car disassembled...wouldn't be too expensive to build them again. Once I get the software going I'll see what a shorter upper arm will do. I was thinkin about it and it is like adding shims, but with adding shims you are relocating the whole arm, so the mounting/pivot point changes. If you shorten the arm, the pivot point doesn't change. I'm glad to hear from someone who's used the software. Did you pay $400 for it (or whatever it is)? My demo expires soon and I don't want to spend that kinda cash for software...



David, what's PHR (sorry, I'm new, remember)?

Dennis, I guess we can both learn somethin from each other...
from Herb Adams (pg 48): "the roll center location can move both vertically and laterally if the upper control arm length is not correct"
I know I can't pull 1g...but some cars can...and the effect is the same for .1g. I specified a flat track just to keep things simple. And I know no car keeps the camber at 0, but that's the goal. I might be wrong, but I think some cars maintain less than +/- 2 deg throughout various steer, roll, and dives. If that's not "almost" 0 to you, I apologize. And I'm not trying to be an ass, but I am curious about some things: How do you load the car with such high forces? Just 0.1g's for a 3000lb car is 300lbs...that's a lot to test...how do you do it? Do you simulate roll, steer, and dive? What application are you doing this for, race cars? Also, how does the toe-out change the caster? I thought that would just rotate the spindle, not change the angle of it (change the position of the upper ball joint). I can't seem to visualize it...