Miatav8,MstrASE,A&P,F wrote:
Don’t worry about rear kpi and scrub.
Add your camber curves and both x and y rc locations to the chart out to 4 degrees roll. Try to limit roll to 4 deg; preferably with a swaybar and softer spring rates over heavy springs and no bar.
The scrub is 2.214” with 1.77 backspacing. The practical thing to do is to use front wheels with more back spacing. Four inches would be about right but then you’d need to reconsider track, longer arms, etc. You can get up to 5 inch back space in an 8 inch rim. I will leave it as-is for this tweak. If you really want to use these rims with these spindles, consider adding power steering or a high ratio/leverage “slow” rack and steering damper.
Thanks for the suggestions. The roll amount is one thing I haven't heard anyone talking about on here so that makes a lot of sense. I was planning on fitting softer springs and taking up the roll with swaybars as well after I get the car rolling and testing it out at a local autoX.
I will have a power steering pump on the car but depending on how heavy the steering will feel I would for sure be interested in switching to different offset wheels since the wheels I was planning on using have been discontinued. I'm also not set on the Mustang II front spindles considering all the packaging issues I've had. Something with more inboard balljoints (closer to wheel center I mean) I feel would work better but I'm unsure of what would work as far ass off the shelf spindles.
I'm looking at this
thread and considering my tire size would you say I'd be alright with somewhere around 5mm-10mm of scrub radius?
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