Author Topic: 4 link options  (Read 2050 times)

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hansi530

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4 link options
« on: Oct 13, 2012, 09:21:10 PM »
4 link rear suspension whats better a double triangulated or a single triangulated? is there any advantages or disadvanteges  to either one? any info would would be great thanks  :biggthumpup:
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pumkin toy

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Re: 4 link options
« Reply #1 on: Oct 14, 2012, 09:29:30 AM »
single triangulated is going to cause "rear steer" when the suspension flexes.  if it is a double triangulated setup and it is built properly, your axle will stay perpendicular to the frame no matter how much the suspension is flexed.   I built a double triangulated setup on mine and i love it.  ultimately it depends on what setup will fit on your rig.  Because of the frame and drivetrain setup on some vehicles you cant get a double triangulated setup to fit.  FJ40's are a good example.  I did alot of fabwork on a 40 for a friend.  He had installed a Proffits Cruisers 4link setup which is a single triangulated setup.  the lower links are basically paralell with the framerails.  When the suspension flexes, the non triangulated links will pull the axle forward as the suspension droops and push the axle back when it stuffs. This causes the rear axle to "steer" or become not perpendicular to the frame.   Some people dont mind this but personally i dont like it.  Those are the main differences i can think of, not sure what other differences there are. Either setup will work, it just depends on preference and fitment to your vehicle.
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TacoRunner

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Re: 4 link options
« Reply #2 on: Oct 15, 2012, 02:12:30 PM »
Much of what pumpkin just said depends HUGELY on how flat the lower links are at ride ht. I dont have a lot of triangulation in my lowers and yet have understeer in them. The flatter the links the better you are off. Some triangulation will help to keep the wheels straight during articulation. I personalty dont like a full double triangulation because to allows the body to roll more in turns and side hills. While keeping them as straight as possible will help with stability. I've built both. In the end i split the difference with the triangulation and mounted my lowers on top of my axle to keep the links flatter at ride ht. This had additional benefits that i wont go in to.
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MRHilux87

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Re: 4 link options
« Reply #3 on: Nov 12, 2012, 08:53:16 PM »
Intersting breakdown.  Love reading intelligent posts on 4 links.  Hope to be ordering from you soon, unless I man up and fab it myself. 
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Re: 4 link options
« Reply #4 on: Nov 13, 2012, 06:55:43 AM »
Intersting breakdown.  Love reading intelligent posts on 4 links.  Hope to be ordering from you soon, unless I man up and fab it myself.

Thats crazy talk.
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