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Author Topic:   Black Pipe vs. Tubing
69-er
Member
posted March 20, 2003 07:38 PM
What is the reason that black pipe must not be used in the construction of roll cages?

Thanks!

Larry

Racer8c
Member
posted March 20, 2003 07:41 PM
I've been told that it'll break when you try to bend it at extreme angles, but I'm not positive.


neil rucker
Member
posted March 20, 2003 07:50 PM
it will shatter when it breaks. it kind of splinters like wood thats been split. saw alot of it maybe 20 years ago in " enduro" type racecars. bad stuff.


gould
Member
posted March 20, 2003 08:10 PM
i got a couple pieces of it in the trunk for rear weight percentage. we use it all the time at work.

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Dirts for racin', asphalts for gettin' there!!


SLEEPY GOMEZ
Member
posted March 20, 2003 09:03 PM
Okay guys, don't use pipe. I used to use it many years ago until... I bought some pipe for a cage. When I put it in the bender it wouldn't bend. Stongest piece of pipe I've ever seen. With a 10' cheater bar on the bender it bent, about 10 degrees before it broke. The pipe before it bent just fine. So I started asking. It seems black pipe is designed and manufactured to do one thing - hold 65 pounds of water pressure. Many steel mills (small and import) use a lot of recycled steel in pipe. One batch could be made of nothing but old steel angle. The next one could have axles, ring and pinion gears and wheel bearing in it. Point is with pipe one never knows the steel alloy composition. This makes it unsafe for roll cage structure. If you are buying new pipe the tubing is not that much higher priced, it is also lighter and stronger. SLEEPY


gould
Member
posted March 20, 2003 09:20 PM
i didnt bend mine, but i get your point. gould


outlawstock17
Member
posted March 21, 2003 12:06 AM
sleepy is dead on. pipe is for water and gas delivery. tubing is for building race cars. i also recommend using DOM tubing for the main cage.


rico 08
Member
posted March 21, 2003 07:41 AM
yep,DOM is better but seamed tubing is what i generally use to save on cost.


powerglides
Member
posted March 21, 2003 07:42 AM
Use the tubing. My neighbor built a car many years back with black pipe and fittings.He wasn't to interested in safety.


bobaluuu
Member
posted March 26, 2003 10:54 PM
Glides, I'm not tryin to cut ya but have you welded with any galvanized lately. Man that
stuff can fry your guzzle and doesn't stick to well till you pour on the heat.


powerglides
Member
posted March 27, 2003 09:53 AM
I also agree with running tubing. Another hint is not to use a pipe bender to bend tubing either. After about 20 degrees it can start to kink the tubing. I learned the hard way spend a few extra bucks to buy a good bender and have someone do it for ya.

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Get off your asphalt
Do it in the DIRT!


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