Rear tire leaking rimguard

[p0peye]

The leak is on the inside bead the valve stem is on the outside. I was just wondering if I had the tire positioned where I feel the leak is would be on the bottom and applied air pressure of say 35 to 40 lbs would the air force the rim guard out. I doesn't seem to leak when parked only when moving.

 

[greg_g]

The leak is on the inside bead the valve stem is on the outside. I was just wondering if I had the tire positioned where I feel the leak is would be on the bottom and applied air pressure of say 35 to 40 lbs would the air force the rim guard out. I doesn't seem to leak when parked only when moving.

All you can do is try. But I suspect you have some foreign material between the bead and the rim that is causing the leak. As you drive, the tire flexes. And it's that flex that causes the intermittent opening between the rim and the bead. If I'm right about bad seal, over-pressure might work at first. But only until the air pressure goes down again. Then you're back to square one.

I'm pretty sure you're gonna have to clean the rim and the bead. But doing so when the leak and the valve stem are on opposite sides will be tricky. Only thing I can suggest is to rig up some kind of air hose to make a very long valve stem extension. Run the extension through the hub hole in the center of the rim. That way you can break the bead and clean the leaking side, but still be able to re-seat the tire against the rim with air pressure when you're done.

//greg//

 

[Deere Dude]

All you can do is try. But I suspect you have some foreign material between the bead and the rim that is causing the leak. As you drive, the tire flexes. And it's that flex that causes the intermittent opening between the rim and the bead. If I'm right about bad seal, over-pressure might work at first. But only until the air pressure goes down again. Then you're back to square one.

I'm pretty sure you're gonna have to clean the rim and the bead. But doing so when the leak and the valve stem are on opposite sides will be tricky. Only thing I can suggest is to rig up some kind of air hose to make a very long valve stem extension. Run the extension through the hub hole in the center of the rim. That way you can break the bead and clean the leaking side, but still be able to re-seat the tire against the rim with air pressure when you're done.

//greg//

X2 That would work. Hopefully filling the tire more air pressure than normal would take care of it long term.
I was looking at the prospect before of trying to lay a tire down with heavy Rimguard in with no air pressure on it. I would bet the bead would break loose and then you have a serious mess. I have had tires laid down with the valve stem up and cleaned the bead and filled Rimguard through the open bead and that worked.

 

[arrow]

in the otherwise inexplicable example that arrow presented - it's not possible for a rubber tire to contain an amount ... NO KIDDING

//greg//

I'll try this one more time. The example I gave was my method to explain or help the op understand why additional air would not push out liquid ballast and that it would come out anyway if there still remains a void between rim and tire. I knew full well a tractor tire could not endure the extreme example I gave but then switched to a vessel simply to use as an analogy in an attempt to further explain. I can only hope the op gets it even if you find it "inexplicable"

 

[greg_g]

I'll try this one more time.

Why? That point has already been made several times by other members who've managed to actually stay on topic.

//greg//

 

[greg_g]

. I would bet the bead would break loose and then you have a serious mess..

Pretty sure that's why a member suggested to use your loader to break the bead. Judicious application of down force on a horizontal tire should break the seal with a minimum of lost RimGuard., All you've got to do is make an opening big enough to get a crow bar through. From there you simply work around the rim to finish the separation. Clean, re-pressurize, remount.

//greg//

 

[s219]

C'mon S. Air is a fluid only in that it can flow.

Yeah, that's the definition of a fluid, which includes liquids and gasses. They are governed by the same physics and modeled by the same theory.

 

[s219]

At atmospheric pressure, yes. But you're ignoring compression. Air is compressible, liquids are generally not. When the air is sufficiently compressed, it can and will force a column of liquid against gravity. Same principle that makes air-hydraulic jacks work. My point was that - in the otherwise inexplicable example that arrow presented - it's not possible for a rubber tire to contain an amount of pressure sufficient to force RimGuard to the top. Not sure a tire actually represents a column anyway.

Do the math on the pressures/temperatures required to compress air such that its mass is going to be enough to displace a heavy liquid like RimGuard, and it's basically not even in the realm of possibility. Even more so when you consider that about 75% of the volume of the tire is RimGuard. It's just not even something to bring up, for or against the original argument.

By the way, air-hydraulic jacks don't actually mix the air and hydraulic fluid in the same system. They use an air pump or air piston to move the hydraulic fluid. Basically replacing the function of the hand pump. The actual hydraulic circuit remains closed off and separate.

The notion of "column" is only a physics concept -- for instance, you can think of atmospheric pressure at sea level as the result of the column of air above you stretching all the way out to the limits of the atmosphere. It doesn't mean that you need actual columns to make this stuff work. Tires, bubble levels, soda bottles, etc..., are all examples of how liquids and gasses can interact in arbitrary shapes, with the heavier of the two always on the bottom.

On a side note: air can be liquified, of course, but it's a tricky process that involves low temperatures and very strict control. That's a different animal all together. Just trying to stave off the next batch of logic.

 

[greg_g]

it's basically not even in the realm of possibility.... It's just not even something to bring up, for or against the original argument.

Inside a rubber tire? My point exactly. That business about lifting RimGuard to the top of the tire with air pressure was pure fiction. But we'd all benefit if you'd assist in keeping this discussion closer to hand. We were briefly headed back towards discussing the actual issue.

Do you actually have a suggestion about how to fix a RimGuard leak?

//greg//

 

[tmarch]

You can postion the leak at the 12 oclock position and then find a small tool to get between the bead and rim you might be able to remove the material if the adding pressure doesn't work.
Otherwise if you have some way to lay the tire down on blocks or something you could still reach the valve stem for adding air after cleaning the rim and tire and adding sealant. Just supporting the wheel and NOT the tire should maintain the seal on the outside of the rim.