B7500 and tires: Kubota Review  -- Kubota Tractors Discussion Forum and Review B7500 and tires: Kubota Review -- Kubota Tractors Discussion Forum

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 05-28-2001, 19:54 Post: 28688
Bo McCarty THE BO-MAN



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 B7500 and tires

Seen a B7500 in action Saturday on my way to MC a show so I had to turn around and chat to the owner about his Kubota, wow, Kubota should give him an endorsement deal he loves his B7500. Now I'm way over 95% sure I'll be buying the B7500 after seeing it in action mowing a steep, uneven hillside yard.Tires. What are they loading tires with? I'll demo a B7500 this week and I was thinking the dealer said they used calicum in the tires, but the guy I visited with said go with antifreeze and water since the calicum eats the wheel. Bo






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 01-05-2002, 17:31 Post: 34299
I just put winshield washer in my new b7500 works
2002-01-05 00:00:00
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 B7500 and tires

use winshield washer liquid it works great and low cost






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 01-06-2002, 05:58 Post: 34315
TomG

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 B7500 and tires

As far as I know, many people who use CaCl use tubes in the tires. The CaCl doesn't touch the wheels unless there's a leak. Even without tubes, CaCl doesn't exactly eat the wheels.

Many people do use windshield fluid. Methanol based fluid can make an explosive air mixture inside the tire. Some tire shops won't work on a tire that is loaded with methanol.

It seems like any alternative has problems. It eats metal, sterilizes the soil, poisons pets or explodes. And, dumping any of the stuff gets the envirocops on your case. Propy based anti-freeze doesn't have many of these problems. It's problem is cost.

My solution was not to load the tires and depend on an implement for ballast. Well, that's not problem free either when I want rear traction for using my box blade. That problem is that wheel weights are expensive and pains in themselves.






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 01-06-2002, 12:00 Post: 34324
DRankin



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 B7500 and tires

Tom makes a good case against the use of alternative solutions to provide ballast. Calcium chloride and water is the industry standard and any big tire dealer should be able to provide the service. As I understand it CaCL and water is the cheapest, safest, heavy solution available. My tires came with tube anyway so it was no big deal to fill the existing tubes. If you live in a fairly flat area, wheel weights and other methods might serve well, but if you are going to use your tractor in rough hilly terrain then consider the fact that the liquid filled tires get the ballast all the way down to the ground where it can exert the maximum leverage and stability. As far as using food grade antifreeze (the stuff you would use in your RV fresh water system) I see two big problems. First is cost, at 3 to 4 dollars a gallon it is much more expensive the CaCl and water. I think I paid 85 cents a gallon for my tire ballast and that included the labor. The other issue is toxicity. The last time I spilled some RV antifreeze on my lawn it took 3 years to grow the grass back in that spot. When it leaks, and you know someday it will, it will sterilize your soil for several seasons. Bottom line: assess your geography and use. If you are operating in rough rock and roll terrain I would recommend liquid filled tires. If you are operating anywhere other than Fairbanks Alaska, I would recommend Calcium and water as ballast.






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 01-06-2002, 12:32 Post: 34326
Bird Senter

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 B7500 and tires

Mark, I guess different preferences is why they have different products. You mention spilling antifreeze and grass not growing back for 3 years. Well, I had the same experience with calcium. I don't even know where you could find the stuff in my area, and no one that I know would even consider using it if it were available (although it's obviously popular elsewhere). But a neighbor bought a used tractor that came from Minnesota and didn't know it had calcium in the tires until one sprung a leak. He was right across the road, so he drove it right up in front of my shop building with a pencil sized stream running out. And like you said, it was 3 years before the grass came back. And he's also had to replace the wheels after they rusted out, but of course the tractor was about 25 years old, so I don't know how long it took them to rust away. About the only thing I know for sure is that there will never be any calcium in a tire I own. Laughing out loud






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 01-06-2002, 15:04 Post: 34327
DRankin



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 B7500 and tires

I hadn't thought about Calcium killing the grass but now that I do think about it, I realize it is pretty saturated stuff and like any salt it will affect plant life. At least Rover and Barfy are not attracted to it as they are to all types of antifreeze. They think they have died and gone to heaven when thaey smell the stuff and in most cases they do. I still would rather have the stability offered by liquid filled tires and calcium provides the fewest drawbacks of any of the fluids listed so far.






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 01-06-2002, 19:45 Post: 34329
Dirt



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 B7500 and tires

How much weight as fluid is suggested for a B7500 w / R4 tires? How high should the fluid level be in the tire?






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 01-06-2002, 20:16 Post: 34330
Roger L.



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 B7500 and tires

It seems like the subject of fluid in the tires is always interesting. I think that I learn something each time around. I don't think there will be any difference in traction whether the weight is in the tires or in the form or weights closer to the axle, but there will be a big difference in how long it takes to accelerate and stop. Not that tractors do much of either one, but anyone who does a lot of high speed stop and go driving with their tractor Smile would probably prefer the wheel weights over the fluid fill.






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 01-07-2002, 04:42 Post: 34333
TomG

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 B7500 and tires

Guess I forgot to mention beet pulp--I've heard of people using pulp for tire loading. Don't know what might be done to it so it doesn't ferment or something. In that case, it would keep your tire pressures up as well.

Some fine points I've heard are that the CaCl mix is slightly heavier per volume than others and that loading lowers the tractor's centre of gravity slightly more than weights. However, these differences may be more theoretical than practical. I've also heard that loading can distort tire treads at ground contact which reduces effects of the added weight. Again, I don't know how much is theoretical and how much practical.






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 01-07-2002, 06:31 Post: 34339
Bird Senter

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Tom, the beet juice or pulp has a brand name of RimGuard, I believe.






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Discussion Boards > Active Subjects > Messages as Posted > Kubota Review Forum

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Art White 1 | Bird Senter 3 | Bo McCarty THE BO-MAN 1 | Dirt 1 | DRankin 4 | I just put winshield washer in my new b7500 works 1 | Roger L. 1 | TomG 3 |




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