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Has anyone else thought of this? yes the triangulated rids us of the trackbar, but, if it were to have a dual radius arm setup, what would be the pros and cons of this type of setup? other than not being able to stretch the rear without some surgery, i really dont see many more potential backfires of this type of setup.
for those that dont quite get it think clayton setup thats in the front, for the rear also.
The radius arms are used in the front to keep things simple and minimize space taken up by the suspension. There's no real benefit to doing this in the rear.
bumpity bump bump, what about a 3 link rear?
3 link rear has been done, and I believe the wj's are set up like that (with an a-arm like upper link). I believe a proper 3-link rear > radius arm rear
Like stated above, radius arm's are not actually the best way to set up your front suspension, its just that its easy to set up and works fairly well. I'm skipping radius arms completely and just going straight on into a 3-link front, not much more work (vs fabbing radius arms, actually less work IMO) and there seems to be nothing but praise from it on here & pirate.
With a rear radius arms, I think your instant center is where your upper arm mount is on your lower arm. Which means that your instant center is much lower and further back than a triangulated setup. As such, anti-squat would be high, thus theoretically causing your rear to hop quite a bit. No idea how much that is true in real life applications. IIRC, the new JKs have a long arm kit or two that uses rear radius arms. Not to mention the binding of radius arms that will limit your rear articulation.
The only advantage I see in a rear radius arm setup is simpler chassis side mounts (only need two total and I'd guess they could be also be built to be compatible with the stock axle arm mounts). Although a triangulated setup has a lot less going on around the axle side, so relocating shocks out of the way would likely be easier with a triangulated setup.
When you ask about 3-link, are you wondering about a wishbone setup like WJs have? Or a 3 link setup with a single upper that retains the track bar? With the latter, I'd only be concerned with how it reacts during braking.
Last edited by SirFuego; 12-26-2011 at 09:17 PM.
a 3 link with a single upper that retains the trac bar.
The main reason people run a parallel 3 link in the front vs running a parallel 4 link is because packaging is damn near impossible. In the rear, you don't have that issue so you should really look at doing all 4 links. Less chance of failure, same geometry, and no reason not to
Other then that, solid design and you can attain nice handling characteristics
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