Bobcat hydraulic attachments

[georgia088]

I have a bobcat 743. The best of my knowledge is it has a hydraulic pump with 11 gpm pump. I am interested in a water well rig attachment that says it requires a 16gpm pump. My question is what will happen if I try it with mine? If it does not put out enough could I add a pto pump to the pto on the bobcat and combine the two? Since the rig will not be moving once I get in one place I shouldn稚 need the motors hp for anything other than running the hydraulic motor/motors? Is this possible? If not, could I connect to another tractors hydraulic pump and tap it in to the bobcats to run the well rig?
I appreciate any help. And anybody that has any info about these water well rigs I would appreciate it. I am looking at the hydra fab manufactured ones.

Thanks!

 

[mike48130]

With the lower flow rate, you should basically see a lower RPM out of the hydraulic motor on the drill, so it should work but drill slower. It is possible though at higher loads you will see more degradation if the motor has some wear and leak by, the bobcat may not keep up at the lower flow rate.

My 843 has a high flow pump at 16.1 GPM. You might want to see if there is a replacement pump you can swap out that is the higher flow rate. I think the 743's only had one flow rate option, but might want to check the Bobcat parts online. You might find a pump from that era with a higher flow rate you can swap out. You would need to look at the lines to see if they could handle the extra flow. I think it would be tough to add another pump to it, mine has very limited room. I think at that point you would be better off with a stand alone engine and pump with tank setup.

 

[crashz]

I'm not sure if 11gpm would drive an implement that needs 16gpm. Might be like an air tool without sufficient air volume, it wouldn't do anything. Or more likely it would work but slowly.

I don't think you have a PTO on a bobcat 743 skidsteer. But the engine is not transverse, so you might be able to rig up a very crude PTO Pump and driveshaft off of the engine crankshaft. It makes me cringe thinking of it though. Cooling would be a problem as well as a sufficient hydraulic reservoir.

Connecting two machines to get the proper flow would likely be a problem. I have never done it, but I envision the return of all that fluid going to one machine and blowing out the vent. Not to mention, the pressure of each discharge has to be identical to compound the flow, and even then it won't add linearly. Then the cooling and reservoir capacity issues. And neither machine would have a bypass valve that is meant to take the additional flow, so the weaker of the two would control pressure but may still damage something due to bypassing and not fully relieving pressure. I don't think its a good idea.

 

[mike48130]

I think you have a pump very similar to this one. I think it would be the same but the length is probably longer. I would try to get a part number off yours to see if you can get the mounting dimensions and port sizes to compare.

This is a 14GPM pump that might be a bolt up option.

1.83 cu in Dynamic GPF23S9C Hydraulic Pump | Gear Pumps | Hydraulic Pumps | Hydraulics | www.surpluscenter.com

15.7GPM option.

1.95 cu in Dynamic GPF232S9A Hydraulic Pump | Gear Pumps | Hydraulic Pumps | Hydraulics | www.surpluscenter.com

 

[Sportsman762]

The drill will turn but it will be slower due to the lower flow. This will limit your progression. I would not double up on hydraulic pumps, as I would be concerned about how the relief valves would work. you could end up pumping all of one machines fluid into the other if the relief valves are not synced. I would be more concerned about the heat buildup on the Skid Steer. They are hot machines to start with, but running it at capacity for hours on end could lead to heat related issues in the hydraulic system.

What are you planning on drilling? How deep and how big. Also do you have any experience in drilling? Below is a thread where drilling a well using a small hydraulic rig is discussed.

https://www.tractorbynet.com/forums/owning-operating/418595-some-more-well-questions-whatisit.html

 

[searcyfarms]

turn slower, less power, more frustrating........more apt to get it stuck

 

[georgia088]

There is a drilled well locates about 75-100 feet from where I would be drilling. Its not on my property, but I have placed a hose down in it. At about 45 feet I hit water. I hit the bottom of the well around 80 feet. It has a 6 inch casing. I do not know what the ground material is. I would love to know how to get local well logs. I am located in Georgia about 60 miles south of Atlanta. The link provided was/is great info on drilling a well. I am still reading it. Thanks for any and all help!

 

[Sportsman762]

The good news is that Georgia is is one of the few states who does not place limits on well construction for personal use.
per 12-5-131.1a "Nothing in this part shall prohibit a person from drilling a well on his or her own property if such property is his or her primary residence. A person is prohibited from drilling a well or wells on property he or she owns and is developing for resale unless such person has a license as a water well contractor. "

However you must follow all the required well construction requirements such as offsets, grouting, per 12-5-136, as well as pulling a well permit prior to construction.

The legal requirements are outlined in 12-5-134.
https://advance.lexis.com/documentp...kkk&prid=aa854c44-b6c4-4890-8c38-1a63317e11f1

There might be some additional requirements set by the Georgia department of health that are not listed in the laws.

The local watershed should be able to provide guidance on were to find the well logs for local wells.
Watershed Protection Branch | Environmental Protection Division

The water well completion form is located here.
https://epd.georgia.gov/document/publication/wwsawelldatacompletionform-2014pdf/download

Also failure to properly install a well can result in the state hiring a well contractor to fix the well. Often this results in setting up over the offending borehole with a drill rig and redrilling the well. Redrilling a well sucks, contractors hate doing it and will charge a ton of money for it (think cost of drilling well times 3-5).

A 6" casing will not be a viable option for you to drill with the rigs your looking at. Also if the well you looked at was an older well and was put in using a cable rig there is a chance of it having a 6" casing then a 4" casing after that. However that depends on what your geological formations are.

On a side note the front pump on your Massey 30 is most likely rated at 20 gallons per minute so it could run a drill much better.

 

[georgia088]

Awesome info. Thanks! So, you think I could connect hoses from that front pump on the mf30 to a rig to drill? Would I still want to get a rig that connected to a bobcat?

 

[ruffdog]

There is a drilled well locates about 75-100 feet from where I would be drilling. Its not on my property, but I have placed a hose down in it. At about 45 feet I hit water. I hit the bottom of the well around 80 feet. It has a 6 inch casing. I do not know what the ground material is. I would love to know how to get local well logs. I am located in Georgia about 60 miles south of Atlanta. The link provided was/is great info on drilling a well. I am still reading it. Thanks for any and all help!

Is it an abandoned open casing? (not good to maintain a good drinking water supply)