Relocating Rear Upper Control Arm Mounting Point for Traction ???

[BillyShope]

You can use the 4link spreadsheet on Page 13 of my site to determine percent antisquat. You should shoot for 100%. Don't be concerned with IC location fore and aft. As Norm indicated, it's the antisquat change that's important.

The spreadsheet asks for link lengths. These would be lengths as projected into the side view and NOT the actual link lengths. (In other words, the spreadsheet was initially intended for use with a competition 4link.)

It should be pointed out that, as the front of the car rises on forward acceleration, geometry changes slightly. Commonly, antisquat percentages slightly more than 100% might be optimum.



Whoops! I just remembered that I'm not at a drag racing ONLY forum. If you're going to be showing up at an occasional autocross, antisquat values of 100% will quite likely cause some wheel hop problems during hard braking. You can still use the Page 13 spreadsheet, of course, but you'd better back off from the 100% value.
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