Water Filled Tyres on a Hydrostatic?

[CPM]

I've been given a couple of different opinions from 2 different dealers as to whether I should fill my industrial tyres with water.

One dealer says never fill tyres on a tractor with Hydrostatic transmission, the other says "it shows he doesn't know what he's talking about, we always fill them with water".

What's the truth here? I'd like the added benefit from the stability with the water but I don't want to put "too much strain" on the hydrostatic system...

 

[tractchores]

Never heard not to fill them, many dealers always fill them if the tractor has a fel. It ads a lot of stability and helps with traction. Generally the fluid is something that won't freeze and is non toxic like beat juice, washer fluid or rv antifreeze

 

[retiredmgn]

"it shows he doesn't know what he's talking about, we always fill them with water".

What he said.
Where's QLD? Get cold there?

 

[CPM]

"it shows he doesn't know what he's talking about, we always fill them with water".

What he said.
Where's QLD? Get cold there?

Nope, doesn't get cold here. Wont freeze, anyway.

 

[SSdoxie]

Mine is hydrostatic and the Owner's manual specifically states for loader capacity to fill the rear tires and hang 650# on the 3pt or no fluid and 880# weight.

How would filled tires versus carrying extra counter weight have any different affect on the transmission? Weight is resistance when starting to move and is inertia when trying to stop regardless of where it is placed on the tractor.

 

[CPM]

Mine is hydrostatic and the Owner's manual specifically states for loader capacity to fill the rear tires and hang 650# on the 3pt or no fluid and 880# weight.

How would filled tires versus carrying extra counter weight have any different affect on the transmission? Weight is resistance when starting to move and is inertia when trying to stop regardless of where it is placed on the tractor.

Apparently it was due to the momentum of the fluid inside the tyre once the tractor itself is stopped. But if the manual recommends it... I don't know why the guy would be saying it. Does it cost them extra to fill?

 

[powerpace]

Apparently it was due to the momentum of the fluid inside the tyre once the tractor itself is stopped. But if the manual recommends it... I don't know why the guy would be saying it. Does it cost them extra to fill?

Another point that he didn't know what he was talking about. Even with the tire filled to the recommended level. You would get just as much extra momentum from hanging weights or 3pt ballast.

 

[CPM]

Another point that he didn't know what he was talking about. Even with the tire filled to the recommended level. You would get just as much extra momentum from hanging weights or 3pt ballast.

He seemed to be suggesting that momentum continues with the fluid, whereas with a weight, it stops when the tractor stops - the fluid keeps turning...

 

[SockPuppet]

He seemed to be suggesting that momentum continues with the fluid, whereas with a weight, it stops when the tractor stops - the fluid keeps turning...

Actually, the fluid has no direct connection with the tires/wheels so it really doesn't matter what it does. Now if you have wheel weights, they continue to want to turn.

Fluid: low center of gravity and no rotating mass. No load on axles.

Wheel weights: Heavy rotating mass. Takes extra power to start and stop them. No load on axles.

Suitcase weights or similar: higher center of gravity, no rotating mass, more load on axles.

Each type has it's place on a tractor. ie: loaded tires will help hold the rear end down when using a FEL but will not take any stress off the front axle whereas rear ballast hanging off the 3PH will use the rear axle as a fulcrum and reduce stress on the front axle.

 

[CPM]

Actually, the fluid has no direct connection with the tires/wheels so it really doesn't matter what it does... Fluid: low center of gravity and no rotating mass. No load on axles.

Do they not completely fill the tyres then? There must be some friction with the tyres, or is there an inner tube? The water will still be a rotating mass, although I guess more evenly distributed compared to a wheel weight on the rim (not that I've seen one, just guessing).

I assumed he was referring to an action that would be similar to a jumping bean - a sloshing inside the tyre causing some "wobbles" until settled down - if not completely filled.