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-   -   Decreasing radius tubing bend (http://www.risingsun4x4club.org/forum2/showthread.php?t=5776)

Red_Chili 01-12-2008 03:33 PM

Decreasing radius tubing bend
Anybody know anybody who can do this? My front fenders have some complex radius bends and I would like to bend tubing to match. 1 1/2" tubing if that matters to ya.

I have heard that the bender may be called a roll bender.

Red_Chili 01-12-2008 04:40 PM

Another thought: one bend would be approximately 8" radius, the other approximately 10" radius, with an easing into the bend, and another gentle curve, that I could probably 'encourage' with a HB pipe bender.

Anybody have these radii for 1.5" tubing?

Rezarf 01-13-2008 01:06 PM

Bill, post up a pic so we can see what you are talking about. FWIW, pipe and tube are measured differently. I have a pipe bender if it would be of help.


chilitoy 01-13-2008 05:49 PM

Also check with Roadrunner Fabrication.They are known for their rolling and bending equipment and tools.Also try Denver Boiler(I think),they roll and bend all types of tube and pipe.We use both places when we have crazy bends and odd sizes.I dont know how much they charge,but either should have no problems.

Red_Chili 01-13-2008 07:34 PM

Thanks for the leads! This Roadrunner? http://www.roadrunnerfabrication.com/home.html
Yeah, I know about the diffos between pipe and tube, and I have a new pipe bender... 1.25 pipe is *slightly* larger OD than 1.5 tubing. It would look OK if I did that.

I heard about HRH fabrication, I will go down there tomorrow afternoon and see what they do. I described it and he said they had done things like that for J**ps.

Here is the front fender I hope to protect (from right after the rebuild):

Notice the compound curves that would have to be in tube at the fender's edge:

RockRunner 01-13-2008 09:28 PM

Have you talked to Hanks auto? They are a few blocks south of C-470 and Sante Fe. He posts on Colorado4x4.org, you can get his info there maybe. I have seen his work, very clean and straight

J Kimmel 01-13-2008 11:33 PM

hank doesn't have a roller.

the other possibility is simply using two different dies, one 4-4.5 ish and the other 5-5.5 ish.

Beater 01-14-2008 07:46 AM

sorry bill, I took mine apart.

you need a hydraulic one to replicate stuff accurately though.. roadrunner is up on 58th ave in denver

Red_Chili 01-14-2008 08:32 AM

HRH was the first place I called, then I saw that Roadrunner was a Yotatech sponsor at one point. We'll see. THANKS for all the suggestions! I have gone from hopeless to very intrigued at the possibilities here. Hopefully my fab skills will lead to something very cool and workable.

At the mall of course.

chilitoy 01-14-2008 11:31 PM

When I did my front bumper,I made a slight bend(about 15-20 deg.),then moved the pipe forward in the die about an inch, and so on. I also twisted the pipe in the die at the same time to get a rolled and helical effect. I tried to start the bends as close as I could to each other so there was not a kinked look. Mark the pipe at the beginning of each bend(your die should have an arrow) so you have a reference for the other side. You said you have a bender, so throw some scrap in and play around and see what you can get it to do. Have fun!

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