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Old 12-06-2021, 12:29 PM   #23
sr71bb

 
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Drives: 2019 Camaro Z-28
Join Date: Jul 2010
Location: Dallas
Posts: 1,482
Quote:
Originally Posted by spl_engineer View Post
So the reason that the design does not work with 18" wheels is inherent in the design of the knuckle. The pickup point for the tie rod end is pretty far from the center of the knuckle. This means the tie rod is already pretty close to the wheel to begin with because it is so offset. To be able to bumpsteer the vehicle, it requires you to move the tie rod placement up or down, depending on the characteristics you are looking for. If we wanted to give people ANY amount of adjustment, I had to make the stud a certain length, which is what we supply. We specifically say it will not work with 18" wheels for this reason on the website. It is unfortunate, as I know many people do run 18" wheels on track, but there just really isn't much room between the tie rod mounting location and the wheel on 18" wheels.

Also to clarify, bumpsteer is not an inherently BAD thing. It can be tuned to be a very beneficial thing - a bit more toe out under compression on turn-in can be helpful, and require less static toe. Giving the ability to tune for these things can really shave those .1's off your lap times. You just have to take the time to properly run the car through it's travel and adjust for what you think the car needs.
Thanks for the clarification. It always helps to the get the info straight from the horses mouth
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2019 SS 1LE BIG NA A10
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