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Back hoe on a sub-compact
I'm new to all this. I have a BX 1800 Kubota and want to build a 3 pt back hoe. I've read in the forum that the tractor can't handle a back hoe. I'd like to get a some more feedback on this.
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Back hoe on a sub-compact
Your chassis is the same as on the BX2200 and is almost the same as on the BX22-23 but not the same due to the factory built and mounted subframe that comes from Kubota. You can build and I believe some manufacturer will have one built in a short time. My only thought is anything else that could be added on in another way will be to the rear so far that at best it's working capacity would be extremely low from a leverage stand point.
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Back hoe on a sub-compact
I not sure I would put a 3PT. on a sub compact, I am not up on KUBOTAS but I've seen to many tractors stressed because of a 3 pt.
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Back hoe on a sub-compact
This is pretty abstract stuff but there's really no simple answer. The simplest way is to see what a manufacturer recommends. If they don't recommend any hoe then it becomes a customer relations issue for them. A 3ph on this or any tractor can tolerate some level of stress and should be capable of tolerating some hoe. The question is how much and the answer should be an engineering assessment.
A 3ph mounted hoe places a variety of stresses on a tractor chassis and traditional tractor design is not the best for these types of stresses. Digging force compresses the top-link and tries to jackknife the tractor at the cases. It's the main source of problems for a 3ph hoe and that stress can be limited by the length of hoe arms and the relief valve pressure.
There are various other stresses and load shocks that have to be managed within a tractor's capacity. Taken together the stresses may result in a hoe that isn't very useful. In addition, even if the chassis is strong, a hoe of any power can move a light tractor around more than it digs. Digging by hand can simply be faster.
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Back hoe on a sub-compact
Art, thanks for the info. Got any idea who would be manufacturing the sub-frame?
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Back hoe on a sub-compact
wallac, can you discribe the stress you've seen on the tractors?
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Back hoe on a sub-compact
TomG, Good answer! I'm looking at a small bucket for this unit, 6 to 10 inch. I'll will be doing, what I would consider as light duty work. Cleaning small drainage ditches, 2-3ft wide. Digging for drainage tile about 1-3 ft deep. Last, some stump digging, this may be the most abusive use of the BH?
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Back hoe on a sub-compact
Top link bracket pulled for rear end housing - Bell housing cracked. Stump pulling is in the top ranks of abuse, that you can put on a machine (in my opinion) Think about this when you hook on something and start pulling what is it trying to do? It's trying to lift the machine by pulling on the top link, Now when you use a subframe you are now lifting the machine from the bottom in which there is no pulling in one direct spot! I know for sure KIOTI and MAHINDRA will not warranty the tractor if they know there is a 3 pt. hoe (and that is obvious when you see a machine)
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Back hoe on a sub-compact
Nobody here should make a recommendation for using a hoe on the tractor. There are risks of serious damage to the tractor, which is true for using any equipment. It'd be good to be informed of the risks and then decide to be a risk taker or not.
Having said that, I've used a 3ph hoe for occasional light-duty work for 5 years without problems. I'll describe some limitations of my hoe below. I think any hoe that has minimal risks to your tractor would be more limited.
It is a Kelley B600 on a Ford 1710. The hoe is a not particularly strong 6' hoe and the tractor weights 3,000 lbs. with loader. I think the Kelley mount distributes some of the load to the drawbar. The soil here is sandy. I don't try to move large rocks in trenches or break sizable tree roots with it. I didn't use it at all last year, but it's there should need arise. My tractor is much heavier than a sub-compact and I wouldn't run my hoe on a smaller tractor. By the same token, a smaller hoe wouldn't do some of jobs I have to do very well.
Although the depth of the hoe is 6' at a 2' bottom, the practical trenching depth is 4' - 5'. Even at 5' you end up spending most of the time moving the tractor. The reach isn't long enough for digging very wide excavations. The 12" bucket will stall the hydraulics if heavy cuts are taken in packed soil with the boom extended. The stalling is good since it limits stress to the tractor.
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Back hoe on a sub-compact
My "blue" dealer strongly cautioned me about putting a backhoe on a compact (mine's 33hp). He said the bell housing bolts stretch/break especially when using the hoe itself to move forward/backward which happens more often than not.
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