Has anybody reinforced factory lower control arms? - JKowners.com : Jeep Wrangler JK Forum
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post #1 of 17 Old 02-22-2019, 02:54 AM Thread Starter
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Has anybody reinforced factory lower control arms?

I'm looking at my once again bent lower control arms that I seem to swap out with new to me used arms every year... I pondered Synergy arms, but then thought... Why not get another free set of arms and weld angle to the bottoms to plate them, and as an angle truss to the top to stiffen them and prevent bending?

I can do this for about $50 in material, and if it works like I suspect it will, they will not bend again.

I pulled my bent drag link in 2015 and added angle iron to it and have wheeled on 37" tires ever since and never bent it again.

I'm betting that similar would work out fine on the lower arms.

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post #2 of 17 Old 02-22-2019, 03:30 AM
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I've never seen reinforced lower control arms and a rig.

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post #3 of 17 Old 02-22-2019, 03:39 AM Thread Starter
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Quote:
Originally Posted by Chipewa View Post
I've never seen reinforced lower control arms and a rig.
Essentially, this is the concept. Control arm bean is black, added material is green. Doing this would massively increase the stiffness and resistance to bending.

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post #4 of 17 Old 02-22-2019, 05:11 AM
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I used to want these for my lowers until I got some sense ...

Yours would probably be more affordable but these are closest thing to reinforced lower arms that I know of, short of running trailing arms..


Currie even offers little replaceable skids for them as you can see
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Last edited by j3ff3ry_j33p; 02-22-2019 at 05:14 AM.
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post #5 of 17 Old 02-22-2019, 05:15 AM Thread Starter
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One of my mental issues is that I run factory arms with RK 3.5" springs and can flex to the physical limits of the tires/body. Spending $1275 on arms isn't going to buy me a bit of additional flex, I can have one tire stuffed into the body to contact and the opposite dropped to the extent of the shock. So I've got nothing to gain aside from a more rugged arm design.

If I can create that more rugged arm for $50, I have gained $1225 in beer money!

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post #6 of 17 Old 02-22-2019, 08:24 AM
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Quote:
Originally Posted by larry0071 View Post
One of my mental issues is that I run factory arms with RK 3.5" springs and can flex to the physical limits of the tires/body. Spending $1275 on arms isn't going to buy me a bit of additional flex, I can have one tire stuffed into the body to contact and the opposite dropped to the extent of the shock. So I've got nothing to gain aside from a more rugged arm design.

If I can create that more rugged arm for $50, I have gained $1225 in beer money!

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don't need all 8 arms. adjustable front lower on the most important. can get core 4x4 for under $250 bucks.

https://www.core4x4.com/product/fron...ntrol-arms-jk/

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post #7 of 17 Old 02-22-2019, 08:28 AM Thread Starter
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Quote:
Originally Posted by SecTxAg06 View Post
don't need all 8 arms. adjustable front lower on the most important. can get core 4x4 for under $250 bucks.



https://www.core4x4.com/product/fron...ntrol-arms-jk/
I don't need adjustable, I have the caster/pinion corrected Dynatrac.

I actually purchased a set of rock krawler adjustable arms and during the install of my axle I realized that they will not adjust short as the factory control arms.

Therefore, my caster was too exaggerated and my pinion angle was wrong.

I ended up swapping back to the stock arms and found everything to be exactly where it should be the way that Dynatrac has the axles built.

So these Rock krawler arms have been laying on the shelf since the winter of 2015 doing nothing.

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Last edited by larry0071; 02-22-2019 at 08:35 AM.
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post #8 of 17 Old 02-22-2019, 09:56 AM
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The angle iron on top is fine, I'd plate the whole sides though. Using something like 1x2 or 1x3 angle for the bottom pieces. Hope that makes sense.

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post #9 of 17 Old 02-23-2019, 06:01 PM
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Thousands upon thousands of dollars shown in that picture and you're being cheap about lower arms??

My ruff stuff arms took an impact at 45 mph and the one is deflected maybe an 1/8 inch. For the ~$250 you're going to spend on a set you'd never have worry about again it seems pound foolish to do anything with stock arms.


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post #10 of 17 Old 03-06-2019, 08:50 AM
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Rock Krawler drills and taps their arms deeper than the joint thread length. You probably have at least a 1/2" you can cut off from the arm to shorten it up
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post #11 of 17 Old 03-31-2019, 06:13 PM Thread Starter
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I know.... It goes against the common thought process. But I can't help myself. I'm going through with my home brew plan and want to see how it works. I'm about $30 in to material with 1/8" wall and 3/4" leg angle. I've got photos, but I can't seem to attach them using the mobile browser on my phone.

I've just got to see if this will work! No real loss if they simply fail again. Then I'll give in and go the retail route like everyone else.

I always prefer to try to home brew things if it's something like this that doesn't require me getting over involved to the point that I'm spending a dollar to save a dime.

Let's see how it shakes out....
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post #12 of 17 Old 03-31-2019, 06:16 PM Thread Starter
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Tapatalk to the rescue!

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2014 JK Willys, 37x13.5-18 STT Pro, 3.5" RK with 1.25 body lift, 28" Fox 2.0 IFP, Ruff Stuff Tie Rod, Synergy Trackbar/Bracket/Sector Bracket, WTO Ram Assist, EVO RockStar Rear Brackets, ProRock 44U, RCV/Ten Factory shafts/E-Locker, Synergy Balls, Factory Rear LSD, 12K LB X2O Gen 2 Comp, SB SRC Front/Body Armor Rear bumpers, RR and RE armor, Adams Shafts, 4.88 Yukon Gears. My toy.


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post #13 of 17 Old 04-01-2019, 05:18 AM
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It would be easier to just cut the factory tubes off and replace withe bigger thicker tube. And while you are at it you could make them a bit longer or adjustable for the lift height you are running.

Some build info here:
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post #14 of 17 Old 04-23-2019, 04:58 PM
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Actually, Larry, I think you're on to something. Yours is a cheap and really quick solution. And you could actually do this on the trail somewhere with an onboard welder and some scrap. Hmmm]

I'm curious to see how this pans out.
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post #15 of 17 Old 04-24-2019, 04:55 AM
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I why* but seeing the most recent photos of @larry0071 work
on those arms compels me to want him to burn sawblade teeth or dragon-back - like teeth all down the bottom of arms . You could slice obstacles out of the way AND cut perfect tomato slices for samiches just by driving over them ...if nothing else , they'd make bitchin sparks on the mall parking space bumps!




(* I think something is wrong with me.)



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post #16 of 17 Old 04-24-2019, 06:07 AM Thread Starter
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Quote:
Originally Posted by j3ff3ry_j33p View Post







(* I think something is wrong with me.)

Drinking maybe.... Or drinking too much maybe?

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2014 JK Willys, 37x13.5-18 STT Pro, 3.5" RK with 1.25 body lift, 28" Fox 2.0 IFP, Ruff Stuff Tie Rod, Synergy Trackbar/Bracket/Sector Bracket, WTO Ram Assist, EVO RockStar Rear Brackets, ProRock 44U, RCV/Ten Factory shafts/E-Locker, Synergy Balls, Factory Rear LSD, 12K LB X2O Gen 2 Comp, SB SRC Front/Body Armor Rear bumpers, RR and RE armor, Adams Shafts, 4.88 Yukon Gears. My toy.


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post #17 of 17 Old 04-25-2019, 04:05 AM
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Originally Posted by larry0071 View Post
Drinking maybe.... Or drinking too much maybe?

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I wish I had that excuse; ironically, being ( honest, not typical American ," ...I'm part injun!" BS, I'm an fifth Cherokee and the rest Danish/Scott, so I physically CAN consume alcohol but by 2nd drink I'm snarling & fighting stop-signs or trashbins= the firewater & I don't mix.
Nope, I'm just losing my mind.



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