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post #1 of 6 Old 08-13-2013, 06:53 PM Thread Starter
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Traction bars

I'm planning on making traction bars for my 01 f250 7.3l. I bought some 3/4 od schedule 80 pipe today and was going to cut it down to 67.5" and put steel 5/8 shank heim ends on the ends. I'm now worried that the pipe is to small. It measures 1 1/16 OD 1/8 sidewall 3/4 ID. Any thoughts? Also I'm running 35" tires with a 4" lift and I'm tired of the axle wrap.
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post #2 of 6 Old 08-13-2013, 08:27 PM
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Yes and no. It depends on what style your going to make.


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post #3 of 6 Old 08-13-2013, 08:38 PM
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Originally Posted by hucorey View Post
Yes and no. It depends on what style your going to make.


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Straight bars that would be a little weak IMO. But if you make them like OUO's or PMF's with that pipe you will be fine.

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post #4 of 6 Old 08-13-2013, 09:17 PM Thread Starter
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Thanks for the quick responses. The plan is to make a straight traction bar. I'm going to weld a mount to the axle between the u-bolts and one on the flat part of the frame. On the pmf traction, is the piece of metal on top for structural strength or looks? If strength that makes sense and maybe that would work for me to do also.
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post #5 of 6 Old 08-13-2013, 10:10 PM
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Originally Posted by Armey37 View Post
Thanks for the quick responses. The plan is to make a straight traction bar. I'm going to weld a mount to the axle between the u-bolts and one on the flat part of the frame. On the pmf traction, is the piece of metal on top for structural strength or looks? If strength that makes sense and maybe that would work for me to do also.
The triangulation PMF uses is for strength. And IMO it looks better too. But looks are an opinion in the eye of the beholder.

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post #6 of 6 Old 08-14-2013, 03:37 AM
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The 2pt straight bar will be a rough ride and will stop axle wrap, but your material is not heavy enough. A 3pt with leaf spring shackle mount on the frame will still allow for much better ride.

Think of it this way when laying out a pattern to make a circle. You use a known distance (radius). You have a fixed point on the frame of your truck (center of the circle). Move the other end up and down (axle), the motion makes a circle, not a straight line up and down. Since your axle is fairly rigid (it is rigid from the front leaf eyes to the axle but shackles in the back), it will push the axle very hard to the back and put a lot of pressure on the front leaf mounts. That's where the shackle mount on the frame comes into play with a 3pt connection and allows the axle to float up and down. The over/under mount on the axle fight equally against each other under axle wrapping as it creates a push/pull effect essentially canceling each force.

Hopefully I explained it well enough as I'm more of a visual person. Lol. :thumbup:

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