Anyone know the lateral acceleration(g's) of the stock suspension on our cars? Also any specs for the skid pad of a modified suspension?
To put it in a different perspective, when Chevy High Performance did their article on the Pro-Motorsports Spindle spacers, they took an older Camaro(255f/275r/45-17s) from .87 to .90 and from 60.60 to 62.93 in the slalom. Not a huge difference, but pretty good for no other changes. They stayed with -3/4 static camber.Also, if the front suspension camber gains were fixed to be optimal, could it be possible to see 1.xx g's on the skid pad?
There is another way. Change the suspension geometry to raise the roll-center. The closer the roll center is to the center of gravity the less roll-torque is transmitted to the suspension. Line them up and the car would not roll at all, but then you'd have taken out the tuning of bars and springs. Of course, that's a moot point for our cars, I doubt you COULD move the roll center thant high...According to Herb Adams you can fix body sway two ways, with a sway bar or with stiffer springs.
I think you and I (and other T56 guys) are both going to find that the instant centers that allow us to mount the LCA's "upside down" and thus put the swaybar above them to maintain ground clearance are going to find a LOT of benefit to handling with the ICB's as well...due to the fact that we should theoretically be able to push the car a good deal harder coming out of turns without the rear end rotating around. I am hoping that the effect on braking is minor enough that it won't have a significant effect on the speed at which the car can enter a turn. My car has a lot of static understeer right now, larger rear bar will help to fix that, but I think that will also bring the throttle induced oversteer out much worse (and it's already plainly obvious on my way out of a corner on the throttle if I am in the right gear entering the corner)...larger front bar will help that...but only to a certain point. This is where I feel that the ICB's out back will provide a significant gain...allowing me to run a lot of swaybar in the front to bring body roll down a lot and I am hoping it will also allow me to run stiffer springs in the rear. I want stiffer springs at a stock height so that the rearend doesn't sag down on me when there's stuff in the trunk, this means I might be pushing the car a bit too close to oversteer from the throttle when I'm holding the right gear and pushing the throttle to the limits through a corner...ICB's will help push the axle down into the pavement while I'm trying to accelerate out of a corner...and depending on my rear spring/swaybar choice, I think they will help provide just the balance I'm looking for in my car. Plus they should help me hook off the line quite a bit as well...something I couldn't do at all on my first visit to the track this year...hoping to go back and run some respectable times after I rebuild the T56 (that I finally took out of the car, so I have no excuse not to now).Originally posted by AutocroSSer:
I am on the list for the instant center brackets as well.....should help the rear in a straight line, will be interesting to see what it does in the turns