2015 Tire Fluid Question

[arrow]

True a ballast box does put added weight on the tractor(axles) But so does a backhoe.Most major brand tractors offer backhoes. Ballasting the tires puts extra strain on the whole drive system! Think about it. How much torque force is required to turn a 50lb tire verses a 200lb tire. How about inertia? Think of the brake force required to stop a ballasted tire! Remember, a rotating object gains Mass. :thumbsup:

First off, the amount of torque required to move a stationary object is associated with it's power supply. A tractor engine puts out a certain amount of torque and that's it. Whether the tractor weighs 1000 or 5000 ills, the torque quotient is established by it's engine and gear train. The engine s designed to put out so much torque and a tractor is designed to do work. Engineers of such things balance these ratios to stay in proper realms of longevity, durability and work output capabilities.

There is a standoff to costs involved with wear vs. efficiency. A heavier machine created by loaded tires will provide more force, have less slippage and use less fuel and thus do more work, Yes, more weight requires more energy to get going but it also creates more efficiency for most tractor work related endeavors..

 

[Jabonee]

Well said arrow. You highlighted my points. Those margins are smaller that one would think. :thumbsup:

 

[Glrret]

I have a related question; Do loaded tires really add that much stability to the tractor? What I'm referring to is lowering the center of gravity and this lessening the chance of a rollover on marginal terrain or lifting with the FEL.

 

[MMagis]

Depends on the tire size and your definition of “that much”. But yes, it does lower the center of gravity.

 

[MMagis]

Edit: Sorry for the double posts. Not sure why it's happening, and now it won't even let me delete the duplicates.

 

[oldpilgrim]

Do loaded tires really add that much stability to the tractor?

yes...

 

[oldpilgrim]

Do loaded tires really add that much stability to the tractor?

yes...

 

[s219]

The fluid is only standing on the ground when the tractor is stopped. As the wheel moves forward the fluid moves backwards. Theres physics involved. Newtons laws of motion. On inicial movement of the tire the fluid moves aft almost 90 degrees. Then varies as speed changes. :thumbsup:

Good gracious, you completely massacred the physics there. Where the fluid contacts the tire it moves with the tire due to friction (boundary layer). So the fluid is strongly influenced to rotate with the tire. I doubt it moves uniformly, but all around the edges it is moving with the tire. That means the fluid in between is tending to do the same.

 

[Jabonee]

Good gracious, you completely massacred the physics there. Where the fluid contacts the tire it moves with the tire due to friction (boundary layer).Correct!:thumbsup: So the fluid is strongly influenced to rotate with the tire.Yes,aft and varies with tire RPM. I doubt it moves uniformly,Yes it does.Its something to see.( I have a great video of it from my days at JD Horicon test facility when we were crunching the 1070 brake and clutch issues.:confused2: but all around the edges it is moving with the tire. That means the fluid in between is tending to do the same.

All I'm trying to say is,physics aside, All the tractors I've see over the last 30 years you could see a difference in the final drive components between ballasted and unballasted tires.Arrow posted it best. the engineers design the drive train to a certain tolerance band in ware and durability. Ballasting tires in my experience moves the trend from the middle.

 

[MMagis]

If that’s the case (though I don’t agree and have never heard of anyone having an issue in my last 30 years), then it doesn’t make sense to suggest a ballast box in place of loading the tires. 3pt ballast is going to be much harder on the tractor components.