Does any one else make a JKS style control arm?
#11
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Basically when the left side is stuffed and the right side is dropped the axle will be further to the rear on the right and closer to the front on the left and this difference in angle would have to be absorbed by the bushings since it's on a different plain Than the swivel
#12
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Dont the Superlift Rockrunner arms do the same thing? I coulda sworn they dont have heims or johnny joints, whatever you want to call em on either end, look similar to the JKS ones as far as i can tell, heres a pic...
#14
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I don't have first hand experience with the Superlilft Rockrunner links, but they appear to be a low cost version of the JKS design.
Where as the short joint on the JKS arms is one piece that threads into the long arm,
the SL design seems to have a threaded rod that threads both into the short joint and the arm. To adjust the thread screws into the short joint.
The JKS have fine thread (12 threads/in) which allow for very fine length adjustments and minimum changes in length as the arm rotates during float.
The JKS uses the long life OEM bushings which do not require lubing. The only lubing is in the arm itself for the bearing and threads.
The SL links have 3 Zerk fittings for the ajustable part of the arm and the two bushings.
The SC arms are ~25% cheaper than the JKS arms and the SC arms are discounted.
I like the rotating float that the JKS arms provide and the use of OEM bushings is big plus. The front lower Clayton arms I use, tend to twist slightly on the front brackets.
I've aligned them twice and eventually after flexing they end up slightly twisted. I've tried tightening the stopnut a bit more and less with the same result.
Maybe it is just a function of the Johnny Joints, but I don't believe I would have this problem with the JKS arms.
The upper ones are OK probably because they are shorter.
I may just end up swapping them out for JKS arms.
Where as the short joint on the JKS arms is one piece that threads into the long arm,
the SL design seems to have a threaded rod that threads both into the short joint and the arm. To adjust the thread screws into the short joint.
The JKS have fine thread (12 threads/in) which allow for very fine length adjustments and minimum changes in length as the arm rotates during float.
The JKS uses the long life OEM bushings which do not require lubing. The only lubing is in the arm itself for the bearing and threads.
The SL links have 3 Zerk fittings for the ajustable part of the arm and the two bushings.
The SC arms are ~25% cheaper than the JKS arms and the SC arms are discounted.
I like the rotating float that the JKS arms provide and the use of OEM bushings is big plus. The front lower Clayton arms I use, tend to twist slightly on the front brackets.
I've aligned them twice and eventually after flexing they end up slightly twisted. I've tried tightening the stopnut a bit more and less with the same result.
Maybe it is just a function of the Johnny Joints, but I don't believe I would have this problem with the JKS arms.
The upper ones are OK probably because they are shorter.
I may just end up swapping them out for JKS arms.
#16
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For my money, I went with Teraflex arms. Yeah, they have a heim. I like them because if anything goes bad over the years, I can buy all the necessary parts to rebuild the arms. That being said, I have had them on a few months now and haven't had a single issue with them. They are solid, the jam nuts stay tight, keeping the arms adjusted correctly, and they are easy to grease (with the exception of the front lowers, which I am currently working on a solution for. The JKS are a nice design and maintenance free I guess, but the way I see it there's a reason so many manufacturers use heims and johnny joints. They provide great articulation, thats for sure. IMO, no parts for a vehicle are truly maintenance free ever.
#18
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Question for any and all following this; What about running two different types on the same vehicle? (exp:JKS in the Rear and JJs in the front) That way you could see which out preforms and out last the other? Or even just one arm each in say the lower front position and then use an RTI ramp to check the results?
For my money, I went with Teraflex arms. Yeah, they have a heim. I like them because if anything goes bad over the years, I can buy all the necessary parts to rebuild the arms. That being said, I have had them on a few months now and haven't had a single issue with them. They are solid, the jam nuts stay tight, keeping the arms adjusted correctly, and they are easy to grease (with the exception of the front lowers, which I am currently working on a solution for. The JKS are a nice design and maintenance free I guess, but the way I see it there's a reason so many manufacturers use heims and johnny joints. They provide great articulation, thats for sure. IMO, no parts for a vehicle are truly maintenance free ever.
#19
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