Anyway to adjust steering sensitivity
09-08-2009, 08:30 AM
#12
6th Gear Member
Join Date: Feb 2007
Location: state of confusion
Posts: 7,635
Toe out or zero toe can sometimes make the car twitchy or darty like that at high speeds. Toe out is great for transitions and turn in, but not so much for high speed straight line stability. I'd try running maybe 1-1.5 degrees total toe in. That would increase straight line stability, but you'd lose some turn in response.
Blair
Blair
1° total toe is almost 1/2" in traditional US domestic toe measurements. You shouldn't need any more than 1/8" (0.25°), and IIRC the spec is 0.1°, ±0.2° which suggests that 0.3° is a reasonable upper limit before you start looking at something else being the culprit.
Skar - this is not a front roll center issue, so the first two items on your list won't directly address what's going on. Indirectly, they might, through the bumpsteer effects being changed with them. I don't know if they'd make your situation better or worse, though, only that it would be "different".
Lowering may have reduced front aero lift, which would translate to greater steering response (and these cars seem to be pretty responsive to the initial steering input as it is). If this is the case, you'll probably adapt to it.
Zero to 0.1° toe may not be enough at those speeds. As far as camber goes, be careful. Depending perhaps on the specific tires you're running up front, camber that's less negative could actually increase the initial response (keeping in mind that the roll that works against the static negative camber setting does not occur instantaneously).
Norm
Last edited by Norm Peterson; 09-08-2009 at 08:41 AM.
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