Traction Bar Geometry

[Baja_XJ]

Im about to start fabbing my traction bar and I was concerned if there was a proper geometry that was needed my it to work without binding under travel. I havent built one before on anything but a street car where proper geometry wasnt so much a problem. Are there calculations needed like when building a four link?

 

[Starboard M]

Most people seem to try and get the mount as close to the tcase output as possible and have around 8'' of separation on the axle end.

Some links for your reading pleasure.

http://pirate4x4.com/forum/showthread.php?t=715483

http://pirate4x4.com/forum/showthread.php?t=672712&highlight=anti+wrap+bar

http://pirate4x4.com/forum/showthread.php?t=464319&highlight=anti+wrap+bar

http://www.rockhardxj.com/viewtopic.php?f=2&t=1873

 

[Blaine B.]

I saw a post once (can't find it anymore) about a traction bar being build on the top of the diff housing. Maybe somebody remembers what I'm talking about?

 

[xSUx SGT BAKER]

I saw a post once (can't find it anymore) about a traction bar being build on the top of the diff housing. Maybe somebody remembers what I'm talking about?

is http://www.jeepaholics.com/tech/bambar/ what you are talking about.

I was also wondering if there was any kind of special geometry to follow. but, from what i have been reading, Starboard M is correct.

 

[fubar XJ]

is http://www.jeepaholics.com/tech/bambar/ what you are talking about.

I was also wondering if there was any kind of special geometry to follow. but, from what i have been reading, Starboard M is correct.

That is an awesome looking anti-wrap bar. I just added it to my project list.

 

[JeepFreak21]

is http://www.jeepaholics.com/tech/bambar/ what you are talking about.

I was also wondering if there was any kind of special geometry to follow. but, from what i have been reading, Starboard M is correct.

I wonder what the AS numbers look like on that setup.
Billy

 

[yossarian19]

I wonder what the AS numbers look like on that setup.
Billy

That traction bar is T!T$
("genious", or "Great")

Really innovative. I'd build that over anything else.

 

[ert01]

Pretty innovative design compared to most traction bars... I'd like to see how it performs next to your standard traction bar in the real world though. It looks great on paper, but there has to be some reason it's not WAY more popular.

Maybe I'm wrong?

 

[whitneyj]

I agree, what's the drawback beside having to weld on the diff housing?

 

[xSUx SGT BAKER]

the big draw back is that its on the top of the axle which would reduce your suspension travel.

 

[XJ_ranger]

http://www.rockhardxj.com/viewtopic.php?f=2&t=1873

that traction bar sucks.

It works, but (as I said) I wish it mounted higher on the axle, and lower on the frame.

 

[Goatman]

Im about to start fabbing my traction bar and I was concerned if there was a proper geometry that was needed my it to work without binding under travel. I havent built one before on anything but a street car where proper geometry wasnt so much a problem. Are there calculations needed like when building a four link?

No need for any calculations. Technically it's better on the pass side, since any up forces exerted on the chassis would counteract the normal force that wants to push down on the pass side. Try to make it as flat as possible, which is pretty much how it fits on an XJ. I assume you understand the principle of the double joints at the front so the axle can work freelyu without binding. Two joints together allow for the axle to rotate and to move fore and aft, so no binding under any type of suspension movement. Have enough seperation at the axle that it doesn't over stress the components, and make the whole thing strong enough especially the attachments at the axle.

 

[Blaine B.]

How so? I would think it would limit flex even more being positioned out towards the ends of the axle.