Rear 4 link question

S

Suzuki450ltr

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Sep 17, 2015
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I want to put air ride on my 03 and I was looking at all the different types of 4 link set ups I was wondering if using a radius arm setup would work just as good as a parallel 4 link?
 
Radius arms work kind of goofy in the rear (lots of lateral movement). You want a beefy panhard bar if you do it. You'd also want pretty stiff bushings.
 
A double triangulated 4-link works best for keeping the axle positioned well under the truck. Parallel 4-links require a panhard bar or watts link to keep the axle positioned under the chassis.
 
Chris Tobin said:
A double triangulated 4-link works best for keeping the axle positioned well under the truck. Parallel 4-links require a panhard bar or watts link to keep the axle positioned under the chassis.
Click to expand...



That's what I want to do but the gas tank is in the way
 
Panhard works fine. Might just hammer out the bushings faster in a heavier vehicle. Just keep an eye on it periodically to make sure it's not getting too sloppy.
 
Suzuki450ltr said:
I would like to do that but the gas tank, axle, and exhausts are in the way
Click to expand...

Ya with a frame mount tank you generally have to go with parallel 4-link setups...

With my truck we want to stick with the double triangulated setup with trailing arms for the lowers and bars or maybe even a wishbone for the upper links.

But we will be running a fuel cell either in the bed behind the cab or to the rear of the axle between the frame rails...

Lots of work either way.
 
Chris Tobin said:
Ya with a frame mount tank you generally have to go with parallel 4-link setups...



With my truck we want to stick with the double triangulated setup with trailing arms for the lowers and bars or maybe even a wishbone for the upper links.



But we will be running a fuel cell either in the bed behind the cab or to the rear of the axle between the frame rails...



Lots of work either way.
Click to expand...



I has looking and I might have come up with a way to run a single triangulated 4 link with stock gas tank bump I might have to move my exhaust. I gotta do some measurements
 
I'm running a wishbone style upper link on my "4 link" to eliminate the extra panhard bar. Granted everythign on my truck is a one off, you could do something similar and keep factory fuel tank.

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One other question I have is with the axle angle for the drive shaft not to bind. With a parallel 4 link the axle stays the same angle no matter what lift wouldn't that cause bind?
 
And setting the bars when would I want them level? At ride hight, fully extended or fully collapsed
 
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