filled tires while moving

[CalG]

Thoughts come ...... ;-)

What is the realized ground force on a liquid filled tire while in motion?

Some portion of the fluid fill MUST follow the inside of the tire enclosure and actually Reduce the weight on the tire contact patch, (obviously not the weight per unit area)

Doe that matter for any applications you can think of? High speed traction ? Hmmm....

More to the point, Has anyone seen any published references as to when and at what speed "fluid filled tires no longer provide significant weight increase"?

 

[Raspy]

Even if your speed was high enough to make all the liquid fly out and remain against the inside perimeter of the tire, the weight of the tire and the fill liquid is still the same. It's just a spinning weight instead of a stationary weight. So the force against the ground will be the same. The tire may flex differently, but it still weighs the same.

What if it was a solid iron wheel, for instance? It's easy to see that it would be just as heavy while spinning as when not. Or, if you have a centrifugal force lifting it at the top, you also have an equal centrifugal force pushing it down at the bottom, so the dynamic forces would cancel.

But with a higher force inside the tire as it comes in contact with the ground, it may flex less as it becomes affectively harder, but at tractor speeds, this seems like it would make no difference. Look at dragster tires, at low RPM they flatten and wrinkle for traction, at high RPM they expand for higher gearing and they flex much less.

 

[Texasmark]

Guarantee you that no faster than you roll the tire and considering the amount of the area of a cross section of the tire would amount to the friction of the fluid to the tire/wheel, static vs dynamic, same deal.

Fluid has it's ups and downs. I have half my corral filled. Other half no weight or mechanical weights. Tire maintenance with a filled tire is what it is, as is mechanical weight type.

What I like about fluid filling is that the weight is on the ground and at the lowest height so in working slopes, you get the best advantage of your ballast. On plowing, it may or may not matter, depending on your tire type and air pressure.

 

[oldnslo]

If your tires are only partially filled and you spin them fast enough then yes you could in effect get the fluid to migrate to one side and the tire would become unbalanced like swinging a bucket over your head. Not sure what speed this would happen at though.