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Old 09-10-2015, 02:17 AM   #31
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If you are in aa situation where you can't weld, I'd like to second nat's suggestion to get hat channel that conforms to the existing ribs.

You can solid rivet the pieces together if you have enough overlap to make a solid spar. Consider you really need to attach the sheet metal to the rib too, in order to give it shear and load transfer strength.

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Originally Posted by nat_ster View Post
You will not be able to use bolts with tubing.

There are no flanges to bolt through.

If you use tubing, your stuck to welding them in.

You also can't use adhesive with tubing. The new and old pieces must match to use adhesive.

Hat channel is the way to go.

Nat
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Old 09-10-2015, 02:30 AM   #32
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This is good enough to do what you want it to do. You will also need a mask $40, preferably a slag hammer but a regular one will work, a wire brush and a grinder, and some clamps you can never have too many clamps.
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Old 09-10-2015, 07:38 AM   #33
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Originally Posted by CaptainInsaneo View Post
90 Amp-AC, 120 Volt, Flux Cored Welder
This is good enough to do what you want it to do. You will also need a mask $40, preferably a slag hammer but a regular one will work, a wire brush and a grinder, and some clamps you can never have too many clamps.
Or some see me and use my new Hobart for free!
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Old 09-10-2015, 09:34 AM   #34
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Could I squeeze a Shim into the little space between the bars, then weld? I'm being told be some people that could work no problem, just want yall's opinion!
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Old 09-10-2015, 06:28 PM   #35
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Post some IRL pics of the tubes and channels in question, with out that it is all just guessing.
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Old 09-10-2015, 08:56 PM   #36
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I am too raising the roof on my bus. I am welding 1.25 x 1/8 inch thick wall square tubing. I am only raising the roof 12". I think welding would be the best for strength, Especially as high as you are going.
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Old 09-11-2015, 01:17 AM   #37
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The more layer, shims ect, the less strength you will have.

Mickslife.

Please look around this site before thinking welding thin, galvanized metal is stronger than other methods. We have covered this repeatedly. Long story short, a armature welding outside with substandard welding equipment, with minimal experience leaves a massive margin for crappy welds that can and will break.

You also risk damaging the original hat channel supports beyond repair.

Riveting is the way the bus was made for the same reasons airplanes are. Armature DIY people can set good rivets and bolts in almost any environment without failure.

Welding needs to be done right to be strong. Done wrong, it's asking for a disaster.

We don't need to make skoolies even harder to insure. So please guys, lets do these roof raises the best way we can.

Nat
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Old 09-11-2015, 01:20 AM   #38
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I am too raising the roof on my bus. I am welding 1.25 x 1/8 inch thick wall square tubing. I am only raising the roof 12". I think welding would be the best for strength, Especially as high as you are going.
Yeah, welding is definitely best, unless you're scared of weders!
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Old 09-11-2015, 01:25 AM   #39
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I weld a fair bit. No fear of welding here.

I just know when to weld, and when not to.

Armatures should not be welding structural components.

Nat
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Old 09-11-2015, 01:36 AM   #40
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Who said he or she's an "armature"?
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