What do 4 link bars do?
Triangulated 4-links and parallel 4-links accomplish the same thing. They locate the rear axle in the vehicle in its proper place. The bottom 2 links keep the axle in place front to back. The upper 2 links keep the axle from rotating, keeping the pinion angle as constant as possible.
How long should the 4 link bars be on a drag car?
The instant center length can actually affect the overall (race car + driver) reaction time. Bickel states that if your reaction times are good, a long IC point (50-60 inches is generally more desirable than a short one (50 inches or less).
Can I build my own 4-link bars?
Since not all applications will have a kit available, Speedway Motors sells the parts needed to build your own 4-link bars. My project truck is one of those applications where I would have to do some fabrication to get exactly what I wanted. Here’s a guide to help you if you ever need to build your own links of any kind.
Do I need a panhard bar for parallel 4 link suspension?
But a parallel 4 link requires a Panhard bar which adds slightly to the expense and can use up valuable space needed for your car or truck’s exhaust system. A Panhard bar will also induce a small amount of side to side movement during suspension travel… not enough to feel but it may
How long should the upper links be on a 4-link suspension?
Upper Links: The upper links of a 4-link setup can be difficult. The old rule of thumb on length is to make them 75% the length of the lower link – this keeps your suspension geometry more consistent through travel, but it also causes the pinion angle to aim downwards as the suspension droops.
What is the difference between parallel 4 link and Universal 4 link?
A parallel 4-link fits most trucks better because the fuel tank is usually right in front of the axle, inboard of the frame. Universal parallel 4-links are therefore sometimes easier to install because the main link bars utilize a one-piece frame mount instead of two… less time in placing and welding the upper bar mounts.