Thread: Rollcage bending

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What type of truck are you building? Road? Drag? NHRA cage rules call for 1 5/8ths by .118 wall. You could go heavier but thinner won't be allowed if you are doing any class racing...
You should pick up a specific rule book if you plan to do any sanctioned racing.
Mark

There are no shortcuts on this one, you need to use the proper size dies with the tubing you are trying to bend. You wouldn't think an 1/8 inch would make any difference but it does, the tubing won't bend smoothly, as you found out. If you are building a full cage you probably are thinking of racing it, so as Astroracer mentioned most sanctioning bodies have standards that you have got to adhere to.

Don

Drag. It's a 95 s-10. I'm already at .140 so no tech problems there. I'll check again, but I thought min thickness was .134? Either way I should be good.

Originally Posted by GaReb

Drag. It's a 95 s-10. I'm already at .140 so no tech problems there. I'll check again, but I thought min thickness was .134? Either way I should be good.

Minimum wall thickness is .118 but many people use .134 because mild steel tends to vary in thickness a little. The .134 gives you a little fudge room. As mentioned I would get an SFI book & follow it to the letter. Another good idea is to get in contact with your local Tech & ask questions about any parts of the SFI rules your not sure about. If you get your tech information from the guy that will eventually be slapping a tag on it, you'll save yourself some headaches.
I owe a big thanks to Techinspector1 & division 3 tech Rich Bowers for walking me through my build.