I purchased a year ago and did it from the time of purchase and I still have the same tires. It is worse on dry pavement then dirt. It is a 2002 763g with foam filled tires and the machine hops instead of turning smoothly. Does anyone know what this is. I recently visted someone with the exact same machine 763g but the had air filled tires and it was seamless turning no hopping. Is it my foam filled tires or is it something machanical? Does this cause damage?
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Thanks Fishfiles. One other question: should I rotate the tires could that be a cause? The tires in the back have a little or tread and I thought i read in the Bobcat service book that they should be equal on each side not front vs back.
typo resubmitting:next time I'll preview. Thanks Fishfiles. One other question: should I rotate the tires? could that be a cause? The tires in the back have a little more tread then the tires in the front. I thought I read in the Bobcat service book that they should be equal on each side not front vs back.
i don't think the amount of threads is important unless it affects the diameter of the tire , you don't want to have say a 30 inch tire and a 28 inch tire on the same side , as they are both tied together by the chains it can cause damage as the will turn different speeds and one will have to slip to keep up
Tyres will wear at different speeds no matter what you do. If you spend a lot of time without a load the front tyres will wear faster as the weight is up back so they will stuck to the ground more. Opposite if you carry a load most of the time. The end with the least weight on them will be the ones that will turn the most and wear. The only time the diameter REALLY is an issue is if you put tracks on or spend a lot of time on *sticky* surfaces like concrete or asphalt. If the tyres are different diameters they will fight each other as they turn, on dirt that doesn't seem to matter as they can slip that extra little bit.
I got a lesson on how much weight is transfered to the front yesterday , I had just fixed a T 190 and the 18 yard dump truck pulled up , the operator was off getting lunch and they had a Komatsu he was using to load the truck and the T 190 was to clean up , so I tell the driver that I can load the truck with the T190 and put a little time on the repair , he says it won't go high enough , so I put the bucket over the bed unloaded and it clears it by 3 inches , got a heaping full scoop of lime stone foundation mix and I was 3 inches short of being level with the top of the bed
Kelly I like this idea instead of buying new tires and rims. Where do you add weights? Is this something I get from Bobcat. approx how much weight do I add?
bobcat sells axle weights which clamp around the axle tubes and counter weight plates that bolt in the rear door , i bet they cost dearly now days and don't think it will help much as i have been on machines that had the weights and they still hop
All short wheelbase machines like to "hop" when on surfaces that are paved. Foam filled tires generally are not as hard as they contact the pavement and will flex a bit sideways when turning. Adding weight is not going to fix the problem. It does not seem to damage the machine and probably saves some tire wear as the "hopping" machines seem to leave less rubber. Air filled tires will bounce around when filled with a lot of air.
WebbCo
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The biggest reason any machine hops is the R4 tire. That tractor type tread is being pulled apart and jumps, put a set of smooth tires on it, and it all but goes away.
I have not seen R4 tires foam filled. They tend to be the turf tires or the diamond tread construction type. However, all tires on a Bobcat end up smooth sooner or later. On my machine I have used the tractor style ditch digger 16 inch wide tires and not experienced that much bouncing. Then again, I try and avoid those turns on pavement to help them last longer.
a lot has to do with the operator , you can get good at not bouncing , slow down and be more gradual ------------- on jobs where you have to do a pivot 180 turn in the same area over and over try wetting the ground
OR!, tracks will definitely stop the hopping.
