Ahh ok so he's talking about a front 3 link setup (also what I have.) the general complaint with that on a DD is that the axle could twist and affect the alignment on the side without a control arm. That's never been an issue for me(that I've noticed), but then again I run a prorock so maby that's why, I don't buy it though. The other reason is the lack of redundancy, if an upper control arm or bracket fails in the stock parallel 4 link setup its no big deal. If it fails on a 3 link it's going to rotate, hard. Now this I buy into, I had a weld fail on my truss during a test drive after the build. The axle rotated up twisting the 1/2 plate truss and jamming the pinion into the bottom of the control arm.
I was lucky, I didn't yet have a front shaft so I didn't damage that. I hadn't changed the round flange out for a yoke so it just ground against the arm as opposed to stopping and shattering. I was already hard on the brakes (bedding in new pads) and only doing about 20- 30 kph when it happened. My damage was only the truss and a divot in the upper control arm.
Replaced the truss and filled in the arm with weld. Good to go, however it could have been worse so that's the only thing that makes me think twice about a 3 link on a dd.
—
There must have been a time
when we could have said no.