Quote: I gave this alot of thought! IMO the Caltrac design does indeed change the IC even with the single point front spring mount. For the reasons already stated by me in my posts and the reasons stated above on both of acex,s post.
Simply put! From the Two/three points of contact from the Caltrac front lever. Its more then just a Leverage thing. mike
Sorry...the leaf spring applies the force to the chassis in ONE place and ONE place ONLY. That place is the instant center. You don't move the pivot point, you don't move the IC. Moving the Caltrac bar up or down, simply changes the amount of force placed on the pivot bracket. Simple physics.
Monte
Yep. The Caltracs work well to preload one side or the other to make a car go straighter, which helps 60' - same as shimming the snubbers on a set of slapper bars. You can also "stiffen" the front of the spring to help keep the car from squatting, which is actually the axle being lifted off the pavement. Changing the height of the rear of the bar only changes the leverage that the pivot can apply, not the I/C. To change the I/C you need to raise/lower the front of the leaf springs mounting point.
Free advice and worth every penny... Factory trained Slinky rewinder.........
