DOM Steel Tubing??

[Bloomy]

I am going to make my own set of traction bars. Primarily because I want to. Not to save money or anything of that nature. So can someone explain what DOM (drawn over mandrel) steel is and benefits over other types of tubing. The other thing I need is places to get the heim joints. I have found a few places but am interested in more.



Thomas

 

[NPloysa]

DOM is stronger, made from a single piece of steel, but without a weld, so no seams. DOM at a certain diameter is stronger than the same in rolled steel.



I will be using DOM for my air ride. Here is where I am getting some of my stuff, they are close and have good stuff.



www.spidertrax.com



Nick

 

[Paychk]

All tubing except seamless starts as a flat sheet of steel and is rolled into shape and welded. DOM is further processed by drawing over/through a mandrel, this results in a more uniform size/wall thickness and strength.



http://www.ioportracing.com/faq/rollbar.htm

 

[JPittinger]

Goto Poison Spider Customs (don't know the link but search the internet), they have tubing, heim joints, DOM threaded adapters, etc. Everything you need for the tubing parts. I've been there personally, bought some stuff, and they seem like good guys.

-JJ

 

[BigBadDodge]

Mine is a little extreme but I used 2" DOM with a 1/2" wall thickness and then I used the Skyjacker 1 1/4" kevlar lined hiems with misalignment bushings and grade 8 hardware, you can get the hiems through 4 wheel parts.



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More pics on web site, link in sig.





BBD

 

[KYLE4]

Half inch wall that is massive

 

[NPloysa]

Half inch wall that is massive

When BBD's truck rots away in who knows how many years, all that will be left is the strong Cummins block, and his suspension control arms

 

[Bloomy]

Bbd

LOL, I actually got the idea of 2" from your previous posts. I have a tendency to over engineer things. I don't have the power to justify, but I might some day. Thanks for the info.



Thomas

 

[BigBadDodge]

When BBD's truck rots away in who knows how many years, all that will be left is the strong Cummins block, and his suspension control arms

LOL :-laf

 

[Beast2B]

BBD your truck just looks TOUGH standing still, let alone when the motor starts rumbling! I am JEALOUS!

 

[willyslover]

hellll his truck needs the 700+ ponies just to move alllll the iron on it LOL



also he is way into pulling and needs the mass to control the frame flex of the added sled weight

 

[ThrottleJockey]

The BigBadDodge Ram can get a Kenworth peeing down it's leg.

 

[BWillard]

I used 2"x 3/4" wall DOM on my Jeep axles with 1" heims :-laf



... ... ... ... . of course they were 2 1/2 ton Rockwells!



check out my readers rigs

 

[Tcolesanti]

I used 1 3/4" DOM tubing, . 209 wall, for my own traction bars. I bent the first set I built, but hav'nt been able to bend these yet. I made them about 7' long too and it keeps the axle wrap at bay. I would highly suggest overbuilding your bars from the get-go so you don't have to do any "rework".

 

[Bloomy]

I have been thinking about the length as well. How much importance does the angle of the bars have. Since that obviously determines the length. Perhaps someone could explain it?



Thomas

 

[Tcolesanti]

I have been thinking about the length as well. How much importance does the angle of the bars have. Since that obviously determines the length. Perhaps someone could explain it?



Thomas

I am no expert in this subject, however, this is how I look at it. The longer the bar the bigger the radius when it swings. The shorter the bar the tighter the radius is when it swings up and down. So, with a long traction bar, it affects the stock leaf springs less as the suspension compresses, and rebounds. Also, with a traction bar as long as mine, your attachment point is located on the "boxed" portion of the frame, further enhancing its sturdiness and eliminating side loading the frame. This is only MY take on the traction bar issue and by no means is a proffesional opinion, all I know is that my bars work and I am very happy with them, especailly since they only cost me $260 to build. Hope this helps.

 

[MSalvatore]

The best place for threaded inserts is polyperformance.com as for rod ends I only use aurora bearing. 5 years of abuse a nd never a failure or replacement.



Marc

Neuroc #120