z060ntrack

What is everyone using for their caster setting on C6's?

0C5stein

Go for about 8 degrees. It tracks well and much more than that puts alot of heat into the power steering.

yellow01

Typical approach is set your camber and toe and get the max caster you can get as long as it is even.

z060ntrack

Thanks, I can get more Caster which is at 7 currently with 1.6 negative camber and 0 toe.

gkmccready

I had 7.9deg LF and 7.5deg RF as set by North Star Corvettes. The steering felt really heavy. -1.1deg front camber, -0.9deg rear. I recently installed the Hardbar camber plates and stud kit... I haven't measured caster yet, but with ~-1.5deg front camber, -1.0deg rear camber, and 0 toe in the front, the steering feels _infinitely_ better than it did before.

I've been assuming when I get to measuring caster that it'll be somewhere in the 6deg range now?

0C5stein

Keep in mind that while steering effort increases as Caster increases, more positive caster also helps both front tires lean into the corner, so you do not need to run as much static camber. The less static camber that you run the better braking that you will achieve on the front of the car, due to better contact patch of the front tires.

Also more positive caster helps the car track straight (if you don't have any caster split). The only time you should have caster split in a road course car is if you have a track that heavily favors turns in one direction. At the old Laguna Seca 9 corner track, we used to set the cars up with wedge and caster split, cause you only 2 right hand turns and 7 left turns and we could pick up more time by giving away speed in the two right hand turns. It doesn't work as well for the new 11 turn configuration.

z060ntrack

I agree C5stein, I'm having a slight problem with adjusting to the increased effort (way to much) at higher speeds it takes to turn the steering wheel on the C6 and to not interpret it as understeer. If anyone has driven a C6 you know what I mean. I'd love to have my C5 Z06 steering box back

gkmccready

Like I said, I put on the Hardbar camber plates and stud kit, aligned to ~-1.5deg up front instead of -1.0deg and didn't worry so much about caster... steering feel is _infinitely_ improved on my '06. I'll try to measure the caster this week some time.

0Louis @ LG Motorsports

Dont shoot from the hip, see what the tire temps say

z060ntrack

Okay thats a new one, so don't give away any inside secrets here Louis but how do you identify caster settings with tire temps? I've only used tire temps for camber and toe.

0Louis @ LG Motorsports

Caster is not something we change. Set it once and leave it. Steering input is harder which adds heat and driver fatigue. Yes you can run less static, but what about the low steering input corners which still require static camber?

Set caster to an even number side to side and work with static from there.

Your tire temps and tire wear are what matter. Yes things will change a little from track to track, but it is your duty as the driver/mechanic/ect to make those decisions based off of the data you get during the weekend.

If it were a stock car with a compromised suspension design, or a formula car with no camber gain I would take a different approach to caster, but given what we know about the Corvette suspension design that is what I would do.

gkmccready

Any further hints? "At least 6.5deg" or "at most 8deg" or ...?

0C5stein

Yes

0Randy@DRM

I concur

Randy