![]() ![]() There are lots of variables that affect that, so your car may want a little above the line, or a little below. The rear of the car shouldn't lift or squat, and all the horsepower should launch the car. ![]() If your 'Instant Center' falls on your '100% Anti-Squat Line', then think of your car having as having a 'neutral' setting. Now then, let's figure out what all this means. Ok, now imagine a line from that point to the rear tire contact patch. Note: If you need to know the center of gravity of your car, click here: Now take a line straight up from the front contact patch, and have it intersect the height of the center of gravity. Now imagine a point on the center of the front tire contact patch. Imagine a point on the center of the rear tire contact patch. Theoretically, if the 'Instant Center' falls on the '100% Anti-Squat Line', the rear of the car will neither lift or squat, it will just be pushed foward. Next we will figure out where to place the 'Instant Center'.īut first we have to locate our '100% Anti-Squat Line'. What you're shooting for is a position that will apply just enough force to the tires to make them grab without spinning and the rest of the force will launch the car. Where the 'Instant Center' is located in the car compared to the 'Center of Gravity' of the car is what determines how the suspension acts on the car to launch it. Where this intersects is called the 'Instant Center'. ![]() Now imagine a line going through the upper control arm extending until it intersects the lower line. Imagine a line going through the lower control arm extending towards the front of the car. Ok, first we need to know what an 'Instant Center' is. You don't have to be an artist, just measure your car, height and length of the 4 links, etc. It helps to draw out what we are doing here so you can measure and be able to set up your 4 link the easy way. Note: You need at least 45% of the car's weight on the rear wheels to make a 4 link suspension work properly.Īlso, get some graph paper. So, let's get into it and find out how to do it. Which makes you faster, so you win, get famous, and live happy ever after. Tuning 4 link rear suspensions can make a car launch quicker and use less horsepower to do it. Tuning 4 Link Rear Suspensions for the Drag Strip ![]()
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