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Welding a dual rim

ChasK

ChasK

Member
The weld holding the clamp ring to the rim has broken for about an 18 inch stretch. That weld is real close to the bead of the tire. Can i weld this with the tire on after letting the air out of the tube?

My thinking is the tube would slide to the other side of the tire, and I can make short passes to keep the heat down to prevent damaging the bead. Will that work or am I looking at taking the tire off the rim?

16225.jpg
 
No!

Don't even try it!

For reasons you aren't thinking of.

There is a strange chemical reaction that happens to rubber when it is heated like that, and it creates an explosive bomb, can be some time
later, that will blow your shop apart.

Never heat a rim with a mounted tire, even 1/2 mounted.

There are many safety youtubes about it.

No, it won't happen every time. But it sure seems to happen often enough! Do not take that chance.

Paul
 
looks like you can just tighten it in against the place it needs to be and it will be okay...where can it go ??
 

Pyrolosis Is the technical term. When heated the rubber gives off internal gases and feeds on itself, building up pressure rapidly inside the tire. Just having the core out is not nearly good enough, and even having the tire blocked away from a rim odd things happen, the block gets knocked out, and the tire seats itself from the expanding gases.....

You don't want to weld on a mounted tire. Just too much risk.

Paul
.
Pyrolosis
 
I'm with Tim, draw up the hardware. DON'T weld it UNTIL the tire/tube are dismounted for safety. Firestone has some videos of what happens when excess heat is applied, and the explosions aren't pretty..
 
(quoted from post at 12:17:41 05/10/18) looks like you can just tighten it in against the place it needs to be and it will be okay...where can it go ??
Click to expand...

I need to put 2 clamps on that area yet. Tightening the clamps is what pulled it away and cracked the weld.
 
If you were to let the air out then squeeze the tire to the opposite side of the rim you could weld it without taking all the way off. I have welded tubeless tire rims for changing the center bolt plate with the tire on the rim/wheel.
 
NO!!!! Do NOT weld on a rim with the tire on! NEVER! Even flat!!As was said,the thing becomes a bomb.Dismount the tire and live.
 
Let the air out and leave the valve gut out and weld
it short short passes not because of the tire blowing
up but because you can easily melt the tube . The
videos you see of them blowing up they have a
gauge hooked to the stem the air can?t get out yes if
you weld long enough on it that way it?ll blow .
 
I welded a patch on a rim somehow it got the steel band inside the tire hot and melted the tire cost me a 1000.00 tire lesson learned
 
I usually do not refute posters. VS is wrong. Do not put welding heat on a mounted tire. (even spaced open with bricks) it is a very dangerous thing to do. You will have no time to even run away. It happened to my when I was a Kid, on a gocart tire. I was 30 feet away getting the other tire when it exploded. Though not impacted, I was knocked down. Had I been nearer, I would have been hurt badly. Jim
 
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