I've been going over a lot of old build sheets and track performance records trying to figure out some correlation for rear 4 bar length as it relates to engine set back and wheelbase.... I've been through all my books and they all say pretty much the same thing, mainly emphasizing the angle of the bar, especially the upper bar, and how the bar angle and wheelbase effect lift and weight transfer working off the centerline of the car....

I'm trying to come up with some kind of formula that would take into account the centerline, instant center, wheelbase, % of engine setback, and bar length and angle.... Or am I just looking for data that isn't there?????

PS, if you're wondering what to get me for Christmas, a data acquistion system sure would be nice!!!!!