4-link lengths

[liltexmp]

I've searched for quite awhile and have double checked my own and noone seems to want to give out the lengths. I'm in the Army so I know about secrets but I need some help. If noone is going to tell the lengths that are good just please tell me. Thanks

[Thorsteenster]

link length depends on the desired wheelbase

[USATorque55]

and which chassis you're using, and where on the axles and chassis you're mounting too.

[Turblankas13]

haha i knew some one would ask this soon enough, basically its all up to u, there arnt any designative size lengths so just play around with it and by the way what chassis are you running?

[TxCruzr]

The best thing to do, is if you are running a production chassis, find some buildup threads with those that are using the same chassis and see if they say what length links they are using or ask.
If you have a custom or one off chassis, just get a few sticks of some 4-40 rod or other all-thread and some rod ends and build the lower links to give you the wheel base you want and then build the upper links to position the pinion angle where you want it. More then likely you will need to tweak it some after building the initial 4-link but you can loosen and tighten the rod ends to change the length some and eliminate binding issues. Once you have it dialed in, either build links the same length out of some tougher material or find some thicker tube or brakeline and sleave them with that.
If you do it this way, it can be time consuming but it is also a lot of fun and gives you a chance to learn about suspension design and do some trial and error.

[H3RESQ]

Simple start point.........uppers need to be about 70% the length of the lowers. If you can, stay away from bent links also.

[mrpink]

Originally Posted by H3RESQ

Simple start point.........uppers need to be about 70% the length of the lowers. If you can, stay away from bent links also.

why? and why?

[smokinubyrc]

Originally Posted by mrpink

why? and why?

same here bent links are in and so are high clearance

[H3RESQ]

Originally Posted by mrpink

why? and why?

If lowers are mounted vertical of each other on the axle's end this will help keep axle steer to a minimum. You'll notice this improvement more with a shorter link. A shorter link in turn will allow you too get the clearance you need without running bent links.

They change the geometry if loose or loosened and can hinder steering because of this. I just find them unneccesary and less reliable.

Bent links are acceptable in rear axle applications without rearsteer. IMO.
Back half of chassis tends to need clearance for breakover more than front.