NVR FNSH said:
Merrick,
1. Are the arms seeing any load mid span? Are they two-force members?
2. Granted longer arms could get hung up more easily but I haven't seen any speed bumps that got anywhere near tall enough to hang up my stock suspension. W/O doing the analysis I can't say what kind of load these arms can take compared to stock arms.
3. The mounts look suspiciously similar to the Cepek "Long Arm" kit - notice that the forward body mount is cut for the upper arm. With the zerk fittings it appears that the arms twist and will eliminate some of the binding concerns. Take a look at the "double wishbone" ( I can't think of the other name) 4 link suspensions used on rock crawlers that are achieving huge amounts of articulation.
Brian
I have no issue with any of you, no bias to any side. I have spent the last 13 years building my own and friends rigs. Mostly I broke every manner of every part I could find. I snapped the input of a NP435 and a Dana 70 pinion gear at the same. Trust me I can break anything. It is my super power. :{
1. Mid span load. Hopefully not. But as they hang lower and run longer than the stockers there is more possibility of them getting hit on obstacles. I do not 4wheel my 7000lb truck but I do use it for work around my farm and getting to some remote fishing spots. I have smacked my belly pan a few times and the location of those links is a little more vulnerable.
as for mid span load, even if they do not take that load, the typical loading on the ends of a smaller diameter tube will cause flex and that work of the flex of the metal will fatigue it. Cut that same link down to half its length and it is much stiffer and less prone to metal fatigue. A larger diameter tube is inherently stiffer and less prone to fatigue and consequently failure even if the only loads it ever sees are on the ends it will still bend in the middle and "work" the steel. It may return to its previous shape (straight) but it will only take so many of thse cycles of bending before it fails. Just like an axleshaft that can only twist and return to its previous condition so many times before it snaps. Its not a debate, its fact. Metal can flex but only so many times. He also said "he will upgrade if you want to goto 2"od arms super heavy wall he says but the price is much more expensive" If you need more beef, order it!
If you want something more buy yourself a shear and a welder and get crackin!
3. Double wishbone is called triangulated four link. With the proper separation and agling of the links it eliminates the need for a trac bar to control lateral axle movement and can flex quite well. As far as the anarchy mounts they are not at the correct angles to be triangulated and remove the trac bar. The stock link frame mount points are staggered, the top mount is outside the frame and the lower is directly under the frame. Just like the Anarchy mounts.
My opinion, (everybody has one

) is that the mounts look good. The standard links look kind of small but I would lay odds that they are effectively stronger than the ones that came with my skyjacker kit even with their increased length. I would like to see them made of chromoly material or even solid stock but since larger diameter is available if you want the beef you can get it. (If I get the kit I will go 2 in OD)
I break leaf springs, transfer case housings, spew pinions through the diff cover and generally destroy parts on my Jeeps. Breaking things is kind of a hobby for me. Durability and life span of materials is paramount when I design stuff. The tie rod and drag link on my Jeep are 1. 75 in DOM tube with 3/8ths wall.