Ballast rim guard and proper inflation

[Citydude]

so...... you can load over 300 tons on it???:confused3: Well as long as the aluminum does not deform

Clarification: the 797B hauls 400 tons. The F250 not so much. Even without the aluminum.

 

[ovrszd]

The answer is no, as I stated volume is just a measurement of 3d space. Pressure is a measurement of force. The amount of force pushing against the outside of the tire and causing it to be able to lift the vehicle. You have asserted that somehow something measured in ft3 has the ability to assert a force. Its simply a measurement of 3d space like a liter, or a cup, or a cubic yard.

Bob, I appreciate your patience with my ignorance.

I've asserted that a tire with a large 3d space can carry a tremendous load with little or no additional PSI. See Citydude's example.

So the 3d space of a tire adds to it's ability to carry a load much more than the PSI or air pressure in said tire???

 

[ovrszd]

I want to apologize to the OP for the hijack..... Good discussion. Just not quite on track. Sorry.....

 

[s219]

ovrszd, the real answer is that if you take the contact area of the tire (area pressing down on ground) and multiply it by the tire pressure, you will very closely approximate the amount of weight the tire is supporting. Pressure has to act on an area in order to become a force. Volume doesn't matter at all. It ends up coming down to how much of the tire is in contact with the ground and what the pressure is inside the tire.

 

[budepps3760]

Not a problem.

 

[ovrszd]

ovrszd, the real answer is that if you take the contact area of the tire (area pressing down on ground) and multiply it by the tire pressure, you will very closely approximate the amount of weight the tire is supporting. Pressure has to act on an area in order to become a force. Volume doesn't matter at all. It ends up coming down to how much of the tire is in contact with the ground and what the pressure is inside the tire.

Now that is the most logical thing I've heard to explain this complex situation.. let me sleep on that!!! Thank you for your input:thumbsup:

 

[ovrszd]

Not a problem.

Thank you for your tolerance. Thanks again

 

[4570Man]

I'm with Bob...a "flat" tire with no weight on it contains the same volume of air as the same tire inflated to 100 psi.

Wrong. Air compresses and an inflated tire contains a significantly higher volume of air. If it was filled with compressed water you would be closer to right, but still wrong because the pressurized tire expanded.

 

[murphy1244]

ovrszd, the real answer is that if you take the contact area of the tire (area pressing down on ground) and multiply it by the tire pressure, you will very closely approximate the amount of weight the tire is supporting. Pressure has to act on an area in order to become a force. Volume doesn't matter at all. It ends up coming down to how much of the tire is in contact with the ground and what the pressure is inside the tire.

That is what I was trying to say but I failed. Something like hydraulics with cylinder area and pressure.

 

[ovrszd]

That is what I was trying to say but I failed. Something like hydraulics with cylinder area and pressure.

I know the feeling Murph. I struggle with that often.