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Old August 20th, 2008, 10:28 PM   #1
MiNi Beast
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Question Where is an engineer when you need one?

Can I build my cage without a tube bender?

Thinking of using 1.75 x .120 wall and want to start building my cage here soon but need to know if I could just make angled cuts on the tubing to make the cage come together, speaking in terms of the A and B pillers (my main hoop),
if it would be strong enough I guess. The welding skills are top notch and which mean it will not be done by me, so I trust the welds, just been researching cages and trying to find the engineering details I need to know.

thanks
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Old August 21st, 2008, 08:07 AM   #2
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If your paying to have have something welded (or even a favor) you can have someone do the bends for you. Usually they would only be a few bucks a bend or find someone here that will hook you up. You could do a cage like that but you would have to gusset the shit out of it and it would be the dumbest looking thing you've ever seen. Plus the laughing stock of the intraweb. But I'm no engineer.
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Old August 21st, 2008, 08:12 AM   #3
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I'm no engineer, and you dont have to be to know that a completely mitered cage is retarded.

remember- just because you can doesnt mean you should.

pay someone with the proper tools and knowledge to build a cage.... I mean, hell, it's only your life we're talking about...... you might as well make a mitered cage out of muffler tubing so it doesnt weigh much.
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Old August 21st, 2008, 08:21 AM   #4
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If you would like to rent a bender get ahold of me.

A security deposit would required!
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Old August 21st, 2008, 08:27 AM   #5
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For a normal trail cage I would say find someone with a bender you can buy a case of beer for and have them put some bends in for you.

That being said, if done correctly a very fuctional cage can be built with all mitered joints.
Here's and example, I think there are 4 bends total:
http://www.race-dezert.com/forum/att...1&d=1194310124

Here's the whole thread on that build, it's really long, but the guy does amazing work.
http://www.race-dezert.com/forum/showthread.php?t=31417
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Old August 21st, 2008, 08:33 AM   #6
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Quote:
Originally Posted by VTJeepCJ84 View Post
Here's and example, I think there are 4 bends total:
http://www.race-dezert.com/forum/att...1&d=1194310124
Fake. It is too clean of a workshop.
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Old August 21st, 2008, 08:44 AM   #7
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Quote:
Originally Posted by Tab View Post
If your paying to have have something welded (or even a favor) you can have someone do the bends for you. Usually they would only be a few bucks a bend or find someone here that will hook you up. You could do a cage like that but you would have to gusset the shit out of it and it would be the dumbest looking thing you've ever seen. Plus the laughing stock of the intraweb. But I'm no engineer.
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Originally Posted by 95geo View Post
I'm no engineer, and you dont have to be to know that a completely mitered cage is retarded.

remember- just because you can doesnt mean you should.

pay someone with the proper tools and knowledge to build a cage.... I mean, hell, it's only your life we're talking about...... you might as well make a mitered cage out of muffler tubing so it doesnt weigh much.

These 2 posts pretty much say it all. Can you? Yes.... Should you? No
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Old August 21st, 2008, 08:45 AM   #8
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Originally Posted by VTJeepCJ84 View Post
That being said, if done correctly a very fuctional cage can be built with all mitered joints.

Here's and example, I think there are 4 bends total:
there is more work into one joint on that truck then most people put into a whole cage. That whole truck has been designed on the computer and every tube has been cnc laser notched.

hardley a comparison but yes, that is an example.
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Old August 21st, 2008, 09:01 AM   #9
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He also has to use a TON of more tube to build a chassis with all mitre cuts compared to a chassis of the same strenth/size with bends.

you could put a full jungle gym on your rig with double triangulation and truss support on every corner.... or you could just bend a tube.
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Old August 21st, 2008, 04:55 PM   #10
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Square/mitered would look gay, but it's actually stronger. Just like how square tube is stronger than round.
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Old August 21st, 2008, 09:10 PM   #11
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Well I was thinking of going with the 10 pt set up from SWracing then just adding some dom to it for my own set up then this way I could have a basic set up with all the bends in it for me to install.
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Old August 22nd, 2008, 08:12 AM   #12
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Originally Posted by MiNi Beast View Post
Well I was thinking of going with the 10 pt set up from SWracing then just adding some dom to it for my own set up then this way I could have a basic set up with all the bends in it for me to install.

post a pic or a link to the cage you're talking about..... this is different than what you have in the first post. pretty much all of the additional bars to the cage are straight, usually just the ones that give it the main appearance and perimeter are the ones with bends in them.

a nice simple but strong cage can be built with only 6-8 bends.
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Old August 22nd, 2008, 08:58 AM   #13
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Quote:
Originally Posted by clint357 View Post
Square/mitered would look gay, but it's actually stronger.

disagree, with a given lenth of tube, you could builde a MUCH stronger chassis with bends than a chassis with just miters.
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Old August 22nd, 2008, 09:05 AM   #14
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i have a bender so just bring me the 50 ya owe me and some beer and we can do it up you know where i live.
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Old August 22nd, 2008, 11:06 AM   #15
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disagree, with a given lenth of tube, you could builde a MUCH stronger chassis with bends than a chassis with just miters.
I didn't mention anything about tube length used.
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Old August 22nd, 2008, 11:34 AM   #16
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Quote:
Originally Posted by clint357 View Post
I didn't mention anything about tube length used.
Sure, if you use 600' of tube in a mitered cage with a node point every 12-18" it'll be a whole shit ton of a lot stronger than a properly bent cage that uses 200' of tube and has a node point every 24-36"

Why dont you build a square tube mitered corner cage since it is a superior design?
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Old August 22nd, 2008, 12:12 PM   #17
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Quote:
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I didn't mention anything about tube length used.
then you're right, if you use 6 times the amount of tube, you can have an awesome mitered cage.

If you use 10x the weight in concrete and rebar, you can probably have a sweet cage too
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Old August 22nd, 2008, 03:02 PM   #18
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Quote:
Originally Posted by Bones View Post
then you're right, if you use 6 times the amount of tube, you can have an awesome mitered cage.

If you use 10x the weight in concrete and rebar, you can probably have a sweet cage too
I want to live in a world where concrete and rebar cages are the norm.
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Old August 26th, 2008, 04:44 AM   #19
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Quote:
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then you're right, if you use 6 times the amount of tube, you can have an awesome mitered cage.

If you use 10x the weight in concrete and rebar, you can probably have a sweet cage too
I thought you were talking about the 5% more tube you use when doing miters. What I am saying is that a 90 degree miter is stronger than a 90 degree bend, that's all.
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Old August 26th, 2008, 05:48 AM   #20
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Quote:
Originally Posted by 95geo View Post
there is more work into one joint on that truck then most people put into a whole cage.
AND most people build a cage to save their life if they roll, those trucks are built to fly, land, crash, roll, AND finish the race


so shame on you for wanting to try and build something on your own with a little help from others. pay someone to do it, cause thats the cool thing to do :)
mitered cages can look bad ass if you put some thought into it, and stronger joints=less cage, and less cage=less weight, EVEN if the joints weight more...

but im an engineer, and we dont know shit :)
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