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Modified JK Tech Tech related bulletin board forum regarding subjects such as suspension, tires & wheels, steering, bumpers, skid plates, drive train, cages, on-board air and other useful modifications that will help improve the performance and protection of your Jeep JK Wrangler (Rubicon, Sahara, Unlimited and X) on the trail.

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thinking of upgrading control arms

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Old 12-26-2016, 02:41 PM
  #31  
DJ1
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Originally Posted by kjeeper10
We all know Chuck wheels like this
https://www.youtube.com/shared?ci=nDtoKknFyH0

Lmfao...
Old 12-26-2016, 02:45 PM
  #32  
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Originally Posted by Mike H.
Me too... all suspension and steering related as well... along with Artec and LetzRoll, again, just in suspension/steering.
My opinion is that no one manufacturer has the "mack-daddy" setup, so I mixed up with what i believe to be the best for my requirements.
Guessing you are in the same boat.
I did not mean to offend you with my assessment earlier and make you feel the need to defend your purchase.
We all buy what we buy for different reasons, I was simply letting folks know why spherical/Johnny Joint and the MC/Synergy joints are designed the way they are.

Take care all and have a merry Christmas... I'm off to a seasonal party.

No offense taken. Just trying to put all options on the table so Jeepers can make better & more knowledgeable decisions. In the end, people are going to buy what they are going to buy....

MetalCloak was at the top of my list because I wanted to stick with rubber bushings on both ends. The J-axis I felt allowed for better flex without having to compromise the weak axle control arm brackets.


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Old 12-26-2016, 06:09 PM
  #33  
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Originally Posted by kjeeper10
We all know Chuck wheels like this https://www.youtube.com/shared?ci=nDtoKknFyH0
Depends on how hydrated I am and the group I'm with but that's not too far off! Mine are mainly more hill climb based though lol.
Old 01-04-2017, 05:00 AM
  #34  
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Originally Posted by DJ1
I would consider taking a look at the JKS J-Axis line. ~ the bushing heads can actually rotate a full 360 degrees ==> better articulation while causing much less stress on those flimsy control arm brackets on the stock axles which have been known to snap on the trail.
Originally Posted by DJ1
In MetalCloak's defense, in their video they do show side-to-side movement of the control arm joint which most likely represents side-to-side movement of the axle as the axle shifts under extreme articulation which is good for crawling.
Correct, which is the only time the 360* design of the JKS arm comes into play as well.

Originally Posted by DJ1
The only problem is that the majority of the additional stress now gets focused on the 2 trackbar mounting points and/or the 2 trackbar bushings per axle.
Right, that is exactly what a track bar is designed to do.

Originally Posted by DJ1
Since most have a beefed up axle trackbar bracket that they have installed with their bolt-on lift kits, that means the thin frame side trackbar bracket is seeing the brunt of the flex stress = No bueno.
Again, that is what this part is designed to do. If you are doing any serious wheeling, with larger than stock tires, then address this when you address your steering. That is the reason why there are more robust aftermarket frame side track bar mounts on the market.

Originally Posted by DJ1
By keeping all of the bushings OEM/OEM-like, you can still evenly distribute the stress amongst all of the axle and frame side *control arm* mounting points as well as the trackbar mounting points vs having it all come down to 1 or 2 weakest links, in this case the front or rear trackbar mounting brackets.
Now you want to rely on those flimsy control arm brackets (see first quote)? Or are you just trying to convince yourself? Again, track bars purpose is to do exactly what you are now alluding to as a problem. Only way a control arm can contribute to this is when the design incorporates triangulated 4 links (upper arms installed in a “V” pattern to control the axle location in its side to side movement). Otherwise you cannot rely on a bushing in a control arm to perform this task. Again, that is why the design uses track bars.

Originally Posted by DJ1
If you just take the rear axle / rear frame for example, OEM/OEM-like bushings you more evenly distribute stress amongst 4 control arm bracket mounting points and 2 trackbar mounting points = 6 points total.
If you install control arm joints with too much give, then essentially you're directing all of that additional stress to the 2 trackbar mounting points.
Stress distributed more evenly across 6 points (control arm + trackbar) vs. 2 points (trackbar only).......
I'll take the 6 points. If I have a choice of losing 1 control arm or the trackbar as a result of a snapped bracket, I'll opt for losing the control arm.
Still trying to convince yourself?
Originally Posted by DJ1
MetalCloak was at the top of my list because I wanted to stick with rubber bushings on both ends. The J-axis I felt allowed for better flex without having to compromise the weak axle control arm brackets.
Wait a minute, you just spent a great deal of time convincing yourself that you want to but more stress on those very mounting points.
I was going to leave this post alone, but it seems that you have fallen victim to one of your own complaints…
Originally Posted by DJ1
So have we come to the point in the thread where each mfg creates a new alias and says why only their products are the bestest?
Originally Posted by DJ1
Maybe I should go into sales for JKS / Northridge.
.
Having said all that, I like the JKS arms, and, a million years ago when they first hit the market I strongly considered them due to the fact that they used OEM bushings while incorporating a means to allow the rotational forced be mitigated. They were the best thing on the market at the time if you wanted rubber bushings.
There are now other options out there with rubber on both ends, that cost less.

Last edited by Mike H.; 01-04-2017 at 05:55 AM.
Old 01-04-2017, 05:17 AM
  #35  
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Ooh a e-battle lol
Old 01-04-2017, 05:31 AM
  #36  
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Not to get in the middle of the e-battle - but I really don't see how the CA joints help combat lateral movement and relieve stress from from the TB bracket as DJI states .
You ever remove your TB and push the side of your jeep? It moves pretty damn easy. If they are aiding the TB, it's minimal.
Old 01-04-2017, 05:48 AM
  #37  
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Originally Posted by sea bass
Not to get in the middle of the e-battle - but I really don't see how the CA joints help combat lateral movement and relieve stress from from the TB bracket as DJI states .
You ever remove your TB and push the side of your jeep? It moves pretty damn easy. If they are aiding the TB, it's minimal.

Yep. Maybe if you had the stock rubber bushings things would be more stiff just because they don't move as easily as something like a rock krawler ball joint type. Regardless the track bar is meant to hold all of the lateral movement.

Sort of scary that the whole integrity of the jeep is held together with one little bar
Old 01-04-2017, 07:05 PM
  #38  
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Originally Posted by decoy5657
Yep. Maybe if you had the stock rubber bushings things would be more stiff just because they don't move as easily as something like a rock krawler ball joint type. Regardless the track bar is meant to hold all of the lateral movement.

Sort of scary that the whole integrity of the jeep is held together with one little bar

This quoted comment right here and Mr. Ripper's implosion of his already beefed up rear axle trackbar, which in my view is a result of his failed RK joints allowing too much give thus allowing a larger portion of lateral stress to go to the trackbar mounting points, is all that I need.

Don't need to prove nuffin' to myself here.....proof was already shown.

Think 3 dimensionally, x-y-z axis. X axis offering 360 movement. Y axis limited by shocks, sways, bumpstops. Z axis is where you want the firmer joint. So easy to see that even the GEICO caveman can do it LMFAO.

Next.


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Last edited by DJ1; 01-04-2017 at 07:29 PM.
Old 01-04-2017, 07:37 PM
  #39  
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Originally Posted by DJ1
Next. <img src="https://www.jk-forum.com/forums/attachment.php?attachmentid=664011"/> <img src="https://www.jk-forum.com/forums/attachment.php?attachmentid=664012"/> .
If that first photo you? I've always envisioned you a little less bulky. Lol.
I haven't really thought of reason my bracket ripped off. Your reasoning seems very logical though. Hmmmm



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