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post #1 of (permalink) Old 08-16-2004, 10:30 PM
jcsj
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CJ 5 after market frames?

Hi brand new to this form, been reading back post for two days, lots of good info. Have a 78 cj5, bought in 1981 would like to build new jeep useing some of my running gear.would like any and all info on tube frames round and square pros and cons.
will be buying new steel body at later date[this fall] and redoing a 4.2 will run some stuff about that later. I'm in Maine so travel is in order on east coast to pick up stuff not many shops in this part of the country. thanks for your input. j
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post #2 of (permalink) Old 08-17-2004, 12:38 PM
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Re: CJ 5 after market frames?

The advantage of round tube over rectangle, is that round tube has the same strength in every direction. No matter how you try and bend it, it will provide the same resistance. Where if you are bending a rectangle piece it is much stronger in one direction than the other. Think about a 2X8 board. If you put it between two saw horses and stand in the center it will sag if the flat side is facing the ground. If you rotate that same board 90* and stand on the thin side. It will not deflect at all.

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post #3 of (permalink) Old 08-18-2004, 08:22 AM
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Re: CJ 5 after market frames?

On the other hand, a rectangular tube is a lot easier to attach brackets and stuff to. And rectangular tubes are oriented to provide the most strength in line with the most load.
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post #4 of (permalink) Old 08-18-2004, 08:46 AM
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Re: CJ 5 after market frames?

Yup, that is very true.
I was not advocating a tube frame. Just trying to provide insight on the differences between the two. In fact if it ever came down to it, and for some reason I was actually building a frame. I think I would use rectangle tube. For the same reasons... it is just easier to attach things to.
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post #5 of (permalink) Old 08-18-2004, 12:05 PM
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Re: CJ 5 after market frames?

thanks for the information,I'm thinking the square tube may be the way to go, motor mounts look easier along with the other mounting issues again thanks j
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