Front Shackle relocation

[pplblazerdude]

I currently have rough country 4 inch springs up front and I have heard off people moving the shackle hanger.

If you have done this with stock lift springs can you post up some pictures and also can you tell me how you decided where to move the mount too.

Thanks

Clint

 

[AaronJen]

Someone who has put 52s in the front will probably chime in to fill in the gaps for you, but with stock springs you shouldn't need to move your hangers. You CAN swap in some beefier hangers from ORD or DIY4X, which I did, but relocating them shouldn't be necessary with your current setup.

 

[sweetk30]

why move it ?

if its cause the ride is crap get ride of ruff country and get some like tuff country or bds .

there is a reason there lifts are so cheep

 

[NorCal_Chris]

Wow..


Yes it is a good idea to move stock hangar forward. 47In springs put your shackle vertical, witch sucks. Basically look at the 52 swap threads and move it to the same location. When I first did 52s I left it in the stock location with made the share the same vertical shackle angle.

ANY SPRING will benefit from proper shackle angle and setup.

 

[Hogback Fabrication]

Wow..


Yes it is a good idea to move stock hangar forward. 47In springs put your shackle vertical, witch sucks. Basically look at the 52 swap threads and move it to the same location. When I first did 52s I left it in the stock location with made the share the same vertical shackle angle.

ANY SPRING will benefit from proper shackle angle and setup.

Actually, what most consider the "proper" shackle angle makes the effective rate of the spring higher (i.e. stiffer). So if the idea is to make the springs feel softer, putting angle on the shackle actually does the opposite.

The idea of putting angle on the shackle is to get more droop travel.

 

[NorCal_Chris]

Actually, what most consider the "proper" shackle angle makes the effective rate of the spring higher (i.e. stiffer). So if the idea is to make the springs feel softer, putting angle on the shackle actually does the opposite.

The idea of putting angle on the shackle is to get more droop travel.

Well if he wanted them softer then he needs to go backwards.

IBut I don't belive that's what he is after.

Plus I will take a mildly stiffer spring for it to actually have so droop and work off-road like 90% of everyone else

 

[Hogback Fabrication]

Well if he wanted them softer then he needs to go backwards.

What do you mean?

IBut I don't belive that's what he is after.

Plus I will take a mildly stiffer spring for it to actually have so droop and work off-road like 90% of everyone else

With stock length springs I don't think putting an angle on the shackle will get you any more flex.

 

[NorCal_Chris]

What do you mean?



With stock length springs I don't think putting an angle on the shackle will get you any more flex.

Backwards as in angled opposite of what most do. That lowers the spring rate in theory.

But then you get a jarring effect. I have moved the hangar on my heep with fairly high arched springs a few degrees and gained almost 2inches more droop. It may just be a little bit I think it is worth it

 

[clarkjw24]

You can move the rear eye and bushing that goes through the frame and install longer shackles without killing your pinion angle. It will give you more drop but I don't know that it will help the ride.

 

[Stomis]

Wow..


Yes it is a good idea to move stock hangar forward. 47In springs put your shackle vertical, witch sucks. Basically look at the 52 swap threads and move it to the same location. When I first did 52s I left it in the stock location with made the share the same vertical shackle angle.

ANY SPRING will benefit from proper shackle angle and setup.

I agree with Chris on this.

Most named brand after market lift springs will pitch your shackle angle forward due to the springs length shortening with more arch and the manufacturers not making up for this.

We had a discussion on here a while ago about having alcan make a set of leafs worked out to 49in eye to eye along the top leaf to alleviate the shackle angle being pitched forward without having to move the hangers.

Shackle angle is a long standing debate but in my opinion and experience (and I know a lot share this view) a properly setup shackle angle will be pitched backwards 20-30* at ride height. This allows for the best ride and about a 60/40% droop to stuff ratio depending on your factors.

The shackle angle being forward causes a lot of resistance to over come compressing the spring past the 90* straight up and down point which causes for a terrible ride on the road cause you hardly ever apply enough weight to the truck in bumps to over come this making it seem like the front will compress a couple inches and come to a dead stop on the street but off road it will travel somewhat good due to it getting twisted up better and overcoming that 90* point.

 

[AaronJen]

So what was the final analysis on 49" springs? Anybody try it? I shackle flipped the back of mine and am getting ready to get springs for the front. I swapped in the DIY4X hangers, but don't want to move anything. If getting the custom Alcans would be worth it to get a better angle, and in turn, a better ride, I might go that route.

 

[blazinzuk]

The difference in ride will be negligible, the difference in droop will be noticeable and compression shouldn't suffer.

On the couple I have done it seems about 1.5" forward does it pretty good

 

[AaronJen]

Forgive me for riding the slow train, but I guess I'm not following. Are you saying the longer spring serves to effectively "move" the hanger 1.5" forward without actually having to move it, or your experience has been that it's better to stay with the stock-length lift springs and move the hanger forward?

 

[Fred_M1010]

Actually, what most consider the "proper" shackle angle makes the effective rate of the spring higher (i.e. stiffer). So if the idea is to make the springs feel softer, putting angle on the shackle actually does the opposite.

Could you please explain what you mean?
I can't see how it could be stiffer with more angle, as long as it doesn't bottom out of course.

 

[big dan]

Actually, what most consider the "proper" shackle angle makes the effective rate of the spring higher (i.e. stiffer). So if the idea is to make the springs feel softer, putting angle on the shackle actually does the opposite.

The idea of putting angle on the shackle is to get more droop travel.

I remember Stephen mentioning something in a thread that was contrary to popular shackle angle belief but never did elaborate. Now this?

These ORD guys know something they are not telling us

I think we need a good in depth shackle angle thread, maybe in the center of gravity forum, where all the great design analysts can hash it out. We've all seen shackle angle threads where everyone has an opinion of whats best, some based on experience. I would be intersted in an in depth technical discussion, maybe with some mathematical evidence/explanation.

 

[NorCal_Chris]

its pretty simple.

 

[Fred_M1010]

its pretty simple.

Ok, would you care to ellaborate.
I'm sorry if I don't take a picture on the internet as a fact
Where did you find it btw?

With the shackle in pos A the shackle end of the leaf goes up on compression.
And thereby the axle goes up half that distance, giving it some up-movement "for free" making it softer.
With it in pos B, the opposite happens
Thats my take on it anyway.

 

[sweetk30]

if shackle is pointing at front axle it gets stiffer as it has to over come the 90* mark and go grater than 90* to let the spring flatten out longer for the spring to work correctly.

 

[Fred_M1010]

if shackle is in position A minus 90* or less frm center 90* mark it gets stiffer as it has to over come the 90* mark and go grater than 90* to let the spring flatten out longr for the spring to work correctly.

You mean position B, right?

 

[sweetk30]

will make it real simple.

if shackle is pointing anywere close to front axle then ride = hard.

if shackle is pointing to back axle = smother ride.