Hooking a 3pt splitter to a B7800?

[MDM]

A friend just bought an 07 B7800, 56hrs, FIL, and 60" deck for $12,000. Wow what a deal. Anyway he wants to be able to hook his 3pt log splitter up to the tractor. My thinking was to just have him get the hydraulic hook up kit for the BH75 hoe and install that kit. He could then just have some hoses made up for his splitter and hook it into the loop. What do you guys think? This seemed easier than running hoses all the way up to the loader valve. Would it work this way?

 

[caj4isu]

I beleive the biggest issue the gallon per minute flow on the tractor. I had a BX22 and was looking to do the same thing, but because the GPM flow on the BX22 hydraulic system was 5-6 GPM, it was going to take forever to cycle the wedge.

The B7800 has a 9.5GPM flow, so it might not be so bad. I did some quick calcs, and although I'm just an electrical engineer, not a mechanical engineer, I think my reasoning is valid. If you take a 3" bore x 24" stroke hydraulic cylinder, that is 169 cubic inches of volume of hydraulic fluid that the tractor needs to pump into the cylinder to fully extend the rod. There are 231 cubic inches in 1 gallon, so the tractor needs to pump 0.734 gallons into the cylinder. If the B7800 pumps 9.5 GPM, it will take 4.6 seconds to fill the cylinder. Not bad cycle time.

All changes if:

A. The bore and stroke of his cylinder is different than 3" x 24"

B. The B7800 doesn't pump all 9.5GPM into the aux ports.

C. My reasoning is FUBAR because I don't fully understand fluid dynamics.

I built a stand alone log splitter using an old 3pt I-beam, cylinder and wedge because of the GPM limitations of the BX22. I bought a 6.5HP B&S engine, a pump, reservior, hoses, log splitter valve, filter, etc from Northern Tool and put it all together. I also didn't want to put hours on my tractor while I was splitting wood.

Chuck

 

[MDM]

I don't think my friend is worried about speed as he has be using the splitter with a much smaller tractor. We are just looking for a simple way to hook it up and was wondering if we could just get the backhoe hydaulic kit and do it that way.

 

[Firefighter Kubota]

I don't think my friend is worried about speed as he has be using the splitter with a much smaller tractor. We are just looking for a simple way to hook it up and was wondering if we could just get the backhoe hydaulic kit and do it that way.

That what I did on my 7510. Works great. Take the PB to the 3 point hitch and run it to the rear of the tractor with quick connects, and the return line to the hydraulic block. Currently there should be a shorter line running from the FEL PB port to the hydraulic block.

I did it for $280 because I have the hoses custom made locally ( I was in a rush). If ordered from surplus supply center or northern tool. MUCH Cheaper.

Here is the thread to much splitter post.

http://www.tractorbynet.com/forums/kubota-owning-operating/137152-new-3-point-logsplitter-cant.html


Depending on the size of his piston, speed will be the issue.

keep us posted.

BTW why areyou posting for him ? why isn't he a TBN'er?

 

[kennyd]

We are just looking for a simple way to hook it up and was wondering if we could just get the backhoe hydaulic kit and do it that way.

Yes, that will work fine. Just be sure he understand that the hoses need to be connected either together or to the splitter BEFORE starting/running the tractor.