1.25 solid

the blue-tipped wrench, a vise, and some ass.
 
Or a tubing bender. Solid stock gives you more options than tube because it won't kink. I've bent a lot of solid stuff with the blue wrench through the years.
 
I know your gonna prove me wrong, but Matt, I would think it would take a hell of a bender to bend 1.25 solid wouldn't it?

My vote goes to the torch and ass as rich said.
 
matt. if your bender will bend it then your the guy i'm going to, to build my trac bar/bracket. i'll drill n tap one end that way you could bend it and add the axle end.
if that sounds good to you.
just pm me a price and some info on plans on how to doit. i'm not in a rush still building the other d30 with wj knuckle swap
 
90xj said:
I know your gonna prove me wrong, but Matt, I would think it would take a hell of a bender to bend 1.25 solid wouldn't it?

My vote goes to the torch and ass as rich said.
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Honestly I've never tried to bend it that way. I will do the math in a few minutes and figure it out. Typically, solid stock steel is lower strength/hardness than mechanical tubing, which helps. Also, the leverage required to bend larger tube (say 2") likely offsets the lack of material in the middle. I'll get to the math in a little while.

userbmx1315 said:
matt. if your bender will bend it then your the guy i'm going to, to build my trac bar/bracket. i'll drill n tap one end that way you could bend it and add the axle end.
if that sounds good to you.
just pm me a price and some info on plans on how to doit. i'm not in a rush still building the other d30 with wj knuckle swap
Click to expand...
Regardless of what the numbers say, I'd be willing to try it. I've got an 1-1/4 die I've never used.
 
I don't want you to think i'm being a smartass, i was intrigued that it was even thought of. In my mind it doesn't sound feasible. I'm truly interested in seeing if it works on paper.
 
Is this cold rolled or hot rolled rod. I hope its not hot rolled for steering but if it is and your tubing bender has an aluminum follow die then the mill scale will likely make some pretty bad scores in it. If you do it Matt you may wanna sand blast or sand it first.

How are you drilling and tapping the ends? With a lathe?
 
90xj said:
I don't want you to think i'm being a smartass, i was intrigued that it was even thought of. In my mind it doesn't sound feasible. I'm truly interested in seeing if it works on paper.
Click to expand...
I didn't think you were. You seemed honestly intrigued.
I took a while and did the math. These figures are based on rough numbers and precise formulas. They don't account for how the bender is setup or the length of the arms, just how much force it takes to bend the tube.

2"OD, .120 wall tube, bent to 90deg requires 12,300lbs of force.
1.25"OD solid, bent to 30deg requires 9,900lbs of force.

This assumes both materials have a yield strength of 50,000psi. That relation is a direct proportion, so if the solid stock has an actual strength of 25k instead of 50k, the force required would be half of what it is.

I've got all this in some spreadsheet formulas, so if anybody wants me to compare some other numbers, let me know, it only takes about 10 seconds to recompute.
 
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