fw questions bout them the instructions to install seem pretty straight forward.. but how to adjust them for optimum traction they really dont say?? i suspect that u would lengthen them to make more traction am i right?? also how do u know with out test after test if u are right? i mean lets say i am at the track and not hooking up do i need a jack and jack stands there to adjust them?? thanks for any help or suggestions!!! also bout how long does it take to install the panhard bar and the lca's adn the relocation brackets thanks!!

 

anyone???

 

Did you get the relocation brackets? If not then a lot of adjustability is lost. The rear suspension geometry determines how the car will "squat" during acceleration. Contrarty to popular belief the more a car "squats" the less weight it applies to the rear tires. This is basically how it works. The car's center of mass can be defined as a point in space. For basic control arm adjustability we'll make it 2-D(side view of the car). The suspension geometry also creates a point called the roll center or instant center of the car. This is the point that the car pivots around during acceleration. All cars position the instant center below the center of gravity. As the car accelerates its inertia will attempt to keep the center of gravity in the same place. This creates an equivalent force (F=ma) towards the rear of the car from the center of gravity. This force times the perpendicular distance to the instant center creates a torque that rotates the body around the instant center. This means energy is used to rotate the body and not propell the car forward or add traction. By lowering the rear of the LCA the instant center is raised. This reduces the distance to the center of gravity and results in a lower torque twisting the car. Since energy must be conserved it had to go somewhere and that is in compression in the LCA which translates to downward force on the axle. That is how traction is improved.

For your case by elongating the LCA you will essentially preload it which also places downward force on the axle. If you lengthen them far enough it will point the pinion of the axle lower than horizontal. This means that when the pinion tries to rotate upward it increases compression adding more downward force. If you go past 5 or so degrees of negative pinion angle you run into U joint durability issues so be careful. To much pinion angle also binds the U joint robbing power.

Sorry I don't know enough about the panhard bar, but it has to do with weight transfer from driver to pass side of the rear. You want to set it up to transfer more force to the pass side for a good launch.

hope this helps.

 

The panhard bar only locates the rear axle from side to side or to keep it centered under the car as it goes thru it's motion of travel during compression and rebound. If you have an adjustable bar then you can do just that (adjust) if you have raised or lowered the rear of your car. I lowered the rear of my car without an adjustable bar and now the rear is offset to the right hand side about an inch, with an adjustable bar I could have fixed this.

Steve

 

ok i know bout the pan hard bar.. i do have the relocation brackets and adj lca's.. so if i raise the lca's is that going to me better traction or worse?? i just need to know which way to go with the lca's for better traction thanks and also how long does it take to put the stuff on thanks!!!

 

FWIW, my LCA's are parallel with the ground (stock ride height and relocation brackets installed). Much improvement in launches.

Complete install shouldn't take more than 4 hours.