How long should the 4 link bars be on a drag car?
Registered. 18″ is ideal for your setup.
Does a 4 link need a panhard bar?
There is no need for a separate lateral locating device. Conversely, with a parallel style 4-link, all bars are parallel to each other and the vehicle centerline. A “Panhard bar” or other separate device is required to keep the axle centered.
How do you find the center of gravity on a drag car?
Presented here is the easiest method. The center of gravity height is calculated by weighing the car when level and then raising the car at least 10 inches at the rear and weighing the front again.
How do you calculate cog height?
The center of gravity height is calculated by weighing the car when level and then raising the car at least 10 inches at the rear and weighing the front again.
How does a four-link rear-end work?
As you brake, the forces are reversed. When you or your chassis builder installs the rear-end in your car with a four-link setup, that’s the time to decide exactly which bracket holes you will use for the links. The choices made here will determine the length and height of the instant center.
How do I adjust the 4 link bars?
If your 4 link bars are adjustable for length, you can do it there. The first thing you want to do is make sure the upper bars are the same length and that the lower bars are the same length. This is critical. After you get the bars the same length you need to put them back in and get the car square front to back and corner to corner.
How to check a 4 link setup?
If you want to check your 4 link setup, go to a chassis shop or find someone with portable race scales. Have them put the car on the scales weigh the car with the 4 link disconnected. Then connect the 4 link, preload it and weigh again.
How much weight can you add to a 4 link setup?
One-quarter turn can add as much as 50 pounds. If you want to check your 4 link setup, go to a chassis shop or find someone with portable race scales. Have them put the car on the scales weigh the car with the 4 link disconnected. Then connect the 4 link, preload it and weigh again.