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Design for 2 inch lift shackles

6.5K views 20 replies 11 participants last post by  swigger  
#1 · (Edited)
Hello, i've been a long time reader of this forum and finally making my first post. First a little background about myself. I'm currently a welding/fabrication student starting to expand into CNC operations.

Today while browsing the internet looking for lifts for my 2006 4x4 Z71 canyon I found it outrageous the costs of just a shackle and TB lift for our trucks. So I went out to the truck and took some measurements(and forum searches :th_woot: ), and using the formula 1 unit increase in length relates to .5 units of lift. I designed a shackle (Prototype) i would like some feedback on.

Thank you for your time to read this otherwise unnotable post :wavey:
-Corey
 

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#4 ·
several people have made their own, shackles arent really what drives a combo lift price up though, its the torsion keys. my 2" lift shackles were only about $40, and powder coated, hard to beat that even making your own
 
#8 ·
:yeahthat:
 
#10 ·
How far can i crank my keys without having to do a balljoint flip or diff spacers? rkj, i have full access to a weld/fab/machine shop so making my own shackles really isnt an issue. I'm gonna be finishing a welded set tomorrow. I'm also going to cut out a non welded set.
 
#11 ·
rkj, i have full access to a weld/fab/machine shop so making my own shackles really isnt an issue.
I was simply providing a data point for how much (or how little) you are saving by taking a DIY approach.

If you have full fab capabilities, and time to spare, a set of shackles will cost almost nothing, depending on how you buy the steel.


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#14 ·
that design looks pretty good. Im pretty much in the same boat as you, minus the school part. If i could give you one piece of advice though, it would be to get rid of the radius where youre going to bend it. it would be much easier to line up the bend if it was a 90 degree corner. and also you could probably give it a little more meat around the holes. better to over design than under design.
 
#16 ·
I read your guy's posts this morning and did some redesign adding some more material around the holes (.125) to be exact and elongated the cross member by .5 to account for the bend, however i kept the radius's there and they came out great. Bent them using an iron worker(no heat application). throwing them on tomorrow. After this im going to drop the diff about .5-1 as i see needed to correct the new cv angle and possibly a BJ flip down the road here since it should add some additional lift. thanks everyone for being so helpful, pics soon :)
 
#18 ·
My understanding is that a diff drop should not exceed 3/4" on stock bolts. I think somebody said they lowed it an inch but I can't remember. The SuspensionMaxx guys say longer bolts should be used for their thicker spacers, 3/4" is fine on stock bolts though.

Does your metal need to be hardened for your shackles? I don't know...I am asking. I don't know if un heat treated shackles will crack.
 
#21 ·
No.


"As the carbon percentage content rises, steel has the ability to become harder and stronger through heat treating, however it becomes less ductile"

your next question

ductility is a solid material's ability to deform under tensile stress


If it were a huge concern , switch to a HCS or SS