At the risk of offending the post police, I'll try it again. Fair warning, if you don't like the way I say things, take your whiny self elsewhere. You're not gonna change how I say what I say, so make up your mind now to either tolerate my posts or place me on ignore. Get it? Got it? Good!
We have a saying in JV. If you have short arms, it's not worth the disadvantages of long arms to swap, if you have long arms, it's not worth the disadvantages of short arms to swap. But, you would both be well suited to swap to the J-arms. Best of both, rarely get hung up, and very stout arms with rebuildable ends. In fairness though, In the entire time I've been running J-arms, I've never had to rebuild a Johnny Joint.
I took them apart this last suspension go round to rebuild them, they were in perfect shape and with a thorough cleaning, a repack of some grease into them, and we're good to go for a few more years.
I will post up some pics in a few more weeks of a rig with some J-arms I am building. My buddy whom I'm assisting with this wanted to know why the arms are better. The pic will illustrate the angles better than I can describe them.
First you have to understand a few suspension basics and why we screw the pooch when we lift a rig to fit 35's.
Imagine a control arm that points nearly straight up and down. As you hit a bump the jolt will be transferred straight to the frame. If your arm is level, almost none of the jolt will be felt. Now, that is highly oversimplified but it's extreme to show why the angles on a short arm affect the performance and why the flattening of that angle with long arms produces a better ride at the expense of ground clearance.
Enter the J-arm. It's not only longer by virtue of attaching to the rear of the axle, but because you move the mount up to the center of the rear tube, the effective angle through the pivot points means it's nearly a flat arm without being a rock catcher. I showed this to my buddy and the look on his face was priceless. He couldn't believe that you could get a flat arm on a lifted rig just by virtue of manipulating the mounting points.
Also being longer, the arc that the axle swings in is bigger and aids in getting the tires up over stuff. Go back to the example and imagine trying to get a tire over something with the arm straight down. It would have to lift the whole side of the rig as it starts to climb and impair performance. The flatter angle is a big improvement.
I am Savvy
Knowledge does not equal understanding.