Piecing together control arms? - Page 2 - Rubicon Owners Forum
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post #11 of 19 (permalink) Old 04-30-2019, 06:55 PM
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I am looking at control arms too. I really like Savvy, but I just saw Rancho has a spring sale rebate going on right now. You can get about $150 back on a set of control arms. So with the rebate, you can get into the Rancho arms with the D2 (DDB style) bushing for about $720. That makes the Rancho arms about $500+/- cheaper than Savvy. I'm hoping to find some info from guys running the D2 bushing. Not much out there.
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post #12 of 19 (permalink) Old 04-30-2019, 09:33 PM
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I am looking at control arms too. I really like Savvy, but I just saw Rancho has a spring sale rebate going on right now. You can get about $150 back on a set of control arms. So with the rebate, you can get into the Rancho arms with the D2 (DDB style) bushing for about $720. That makes the Rancho arms about $500+/- cheaper than Savvy. I'm hoping to find some info from guys running the D2 bushing. Not much out there.
I don't know anything about the D2 bushing or how it performs. I looked at it and it looks like a poly JJ style bushing. I am sure they'd be better than stock but looking at the design I think actual JJs or heim joint would have more flex.
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post #13 of 19 (permalink) Old 05-01-2019, 11:12 AM
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I don't know anything about the D2 bushing or how it performs. I looked at it and it looks like a poly JJ style bushing. I am sure they'd be better than stock but looking at the design I think actual JJs or heim joint would have more flex.

As far as I can tell the D2 is pretty much the same thing as the Synergy DDB. (Both are quite different than the Metalcloak Duroflex.) I don't think anyone knows how they will perform or stand up in the long run. They are too new to the market. So they are a bit of a gamble. But when they are $500 cheaper than the Savvy arms, I think they are worth considering. Especially if you are mostly highway driving and light wheeling. That is why I wanted to mention them.



I have no experience with them, so I can't speak about their quality or anything else. But when it comes to bang for the buck, I think they need to be considered. Especially with the current rebate.



From my perspective, I see Rancho as a mass market retailer of mid-level equipment. I think they are better than Rough Country but not as good as Currie. So I am making the assumption that their control arms and the D2 bushing will fall somewhere within that spectrum. Does that sound reasonable to others.
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post #14 of 19 (permalink) Old 05-01-2019, 10:50 PM
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I think that's a reasonable evaluation. I also feel Rancho is mid level product.
As with anything you have to pay a disproportionate amount of money to move up a level or two.
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2014 JKU, JKS lift,Poison spyder flares, bombshell covers,Rancho D2 control arms, JKS adjustable track bars, 35" Tires. GrabBars, Crawler Conceptz rear bumper, Smitty front bumper, Winch. Rough Country inner fenders, Teraflex Disco Mud Flaps
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post #15 of 19 (permalink) Old 05-02-2019, 09:01 AM
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......From my perspective, I see Rancho as a mass market retailer of mid-level equipment. I think they are better than Rough Country but not as good as Currie. So I am making the assumption that their control arms and the D2 bushing will fall somewhere within that spectrum. Does that sound reasonable to others.
That is my opinion as well.

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post #16 of 19 (permalink) Old 05-02-2019, 07:07 PM
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I lifted my LJ about 65,000 miles ago and always had just a little wobble between 40-50 mph. Every now and then the wobble would get really bad. Those times I’d tighten the trac bar and the bad wobble would go away. I recently replaced all 4 ball joints and the minor wobble went away. The lowers probably were bad when it had 20,000 miles on it. Just FYI

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post #17 of 19 (permalink) Old 05-02-2019, 07:15 PM
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Core off-road is another consideration. Life time if you break it we replace it. They come with options and are upgradeable.
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post #18 of 19 (permalink) Old 05-02-2019, 10:12 PM
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"Minor" death wobble is not normally death wobble but possibly bump steer.

Bump-steer is where your Panhard and drag link are out of parallel, of too disproportionate length, or both. What happens is the axle moves from the bump and the sweep of the arms move to different lateral distances so the wheels get turned to the right or left.



Bump steer:
https://www.quadratec.com/jeep_knowl...article-68.htm


Death wobble:
https://jalopnik.com/jeep-death-wobb...p-y-1795053642


With death wobble, you need to be wearing your brown pants. If you didn't or almost didn't soil yourself, it was not death wobble.

As far as control arms go, when I got my Rancho lift kit, it came with the -=beefiest=- lower control arms I'd ever seen. Along with the hardest bushings around. Nothing, and I mean nothing looks like it could make them flex. If anything would give, it would be the brackets on the frame or the axle. A frame costs about 4 grand. An unpopulated bare D44 front axle costs just under grand. A Crown sheet metal control arm kit costs $120.00. So I didn't install them. If I do get upgraded control arms, they will probably be Currie Johnny Joints, which I am confident will not rip the brackets off of the frame or axle, but at $1,200.00, I need to save my pennies.

Last edited by zouaveherb; 05-02-2019 at 10:23 PM. Reason: Adding URLs.
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post #19 of 19 (permalink) Old 05-03-2019, 08:27 AM
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At least it's buy once, cry once with the JJ's. Mine have 100,000 miles on them, tons of off road use, still tight and quiet. Did finally rebuild the rear uppers not too long ago, cheap and easy and should be good for another 100,000.

- DAA
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