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Anti wrap bar opinions

PurfsMcGurfs

PurfsMcGurfs

Handy capable
Joined
Sep 3, 2022
Member Number
5506
Messages
154
Loc
Southern Oregon
I need to build an a/w bar for my rear axle. I happen to have a 3/4" steering kit laying around from ruff stuff that I never used on another project. I'll probably cut axle brackets out of 1/4" and use the DOM for the bar.

My question is has anyone ran heims at the axle and shackle ends? Just trying to figure out if I'm better off with bushings for lateral stability and vibes.

I rummaged through the tech at the old board and there was good info on geometry, instant center and, design but nothing specific about using heims at all points.
 
Sceep said:
bush the axle end. weld in bushings are cheap AF.
Click to expand...
Afarmer1062 said:
The last one I tried with heims on all ends kept twisting the mounts on the axle side. I switched to bushings on the axle side and havent had any issues since.
Click to expand...

Cool, I'll order up some bushings and get to work.

And yes, I'm keeping it old school. Links are for posers and mall crawlers:flipoff2:
 
Afarmer1062 said:
The last one I tried with heims on all ends kept twisting the mounts on the axle side. I switched to bushings on the axle side and havent had any issues since.
Click to expand...

I'm having a hard time picturing how hiems would cause this?

I ran bushings and twisted the whole axle housing. :laughing:

I remember someone posting on the old board that they were thrashing to get a rig done, wanted a wrap bar but didn't have bushing kits. They made literal all steel bushings in the same dimensions so they could add them later without redoing the axle mounts. Iirc, he forgot all about it and ran it like that for years.

Just keep in mind that once you put that bar in, all the rotation of the axle is through that bar, so the mounts need to be about as strong as all four mounts of a link set up if you like to push the limits of your rig.
 
Afarmer1062 said:
The last one I tried with heims on all ends kept twisting the mounts on the axle side. I switched to bushings on the axle side and havent had any issues since.
Click to expand...

Sceep said:
bush the axle end. weld in bushings are cheap AF.
Click to expand...

Yep, what these guys said.

Bushings at the axle end keep the ladder located (think wobble-stopper).

Heim at the shackle end.

The ladder should be a bit longer than the frame mount, so the top of the shackle is angled back just a little (10° or so).
 
YotaAtieToo said:
Just keep in mind that once you put that bar in, all the rotation of the axle is through that bar, so the mounts need to be about as strong as all four mounts of a link set up if you like to push the limits of your rig.
Click to expand...
I'll build it HD but I'm not as wreckless as I used to be. Just trying to reduce axle hop with 56's and a shackle flip. A little drive shaft protection wont hurt either.
 
This is how strong it needs to be. Bushing at axle helm at shackle point


98BCCB27-0764-4B33-B936-E068950A9D96.png
42A4EFCC-5456-4701-A666-3DC38DB2D15E.png
 
3/4 will be fine. Wait, "56's"? 56" tires?

What thickness axle tubes are you welding your mounts to?
 
Btw, I'm being a smart ass on the 3/4 heims not being enough. My shit isnt trussed and this is a pretty basic build.
 
I'm calling bullshit on 1/2" wall thickness tubes.

And/or.

I'm calling bullshit on budget build.

:flipoff2:
 
:eek:
Nice. I've been outtah the loop for many years. 35 spline in that configuration?
 
17.jpg

Pic is weird, it looks crooked but it's not.


I run bushings in the bottom of mine, 7/8" heims on top. 1.25" .120 wall, but the lower tube is solid so it wouldn't get bent on the rocks. Been on the truck over 10 years now, zero issues.
 
I'll also be doing big BGMT style ladder bars on my squarebody with 56s. Post up what you come up with. I'm going to do doubles though because they look sexy and I don't care about the flex characteristics of the truck much:flipoff2:
 
I run the Ruff kit, 5' lower bar. It trashed the bushings on axle end in a few thousand miles. Work very well on and off road. I run shackle in compression. Had a lot of front end lift. Went to a longer shackle to move instant center down, now more better. Less unloading of chassis, tire spin. Springs are Alcan 63s. Bar forces pinion angle at all times

9inkROcvbkjU7pZ6EPexjgd=w1292-h969-s-no?authuser=0.jpg
 
reptillikus said:
I run bushings in the bottom of mine, 7/8" heims on top. 1.25" .120 wall, but the lower tube is solid so it wouldn't get bent on the rocks. Been on the truck over 10 years now, zero issues.
Click to expand...
Did you just butt weld a c style tab to the bar and run the heims as the shackle or am I'm seeing it wrong?
willis_racing said:
I'll also be doing big BGMT style ladder bars on my squarebody with 56s. Post up what you come up with. I'm going to do doubles though because they look sexy and I don't care about the flex characteristics of the truck much:flipoff2:
Click to expand...

Mine will be basically the same as repti and pretty much everyone else's setup. On the passenger side, bushed at the axle, heims at the top. I was thinking 1 heim in the bar and one mounted to xmember. Small shackle in between. Tension style setup. Nothing fancy or big ghey monster truck about it :flipoff2:

20230404_135607.jpg


That's about how the lower bar will sit. Best pic I can get. 1.5" dom .25 wall. It should be more then enough for a stock 350 and small tires. The top tube will be full length to the heim and the lower will go all the way to the end. I'd consider making it even longer but, the geometry should be fine since the total length will be damn close to my driveshaft length.
 
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