This is a 4 foot bush hog modification that I did to adapt it to my 2425

[Tchamp]

That pump that I have it turns the PTO at 400 RPMs, but the shaft is a one and a half to one so my blades are spinning at 600 RPMs it works better on it than it did on my yanmar tractor
It cuts underbrush really well ,briars and thickets. You just raise it up over the top of them set the blade deck at a 45 degree angle so it doesn’t kick debris back at you and just set it down and it just chews it right up.

If I remember correctly, I bought the pump at the surplus center, the yokes were bought at my local agricultural store. They were the ones made for my PTO on this particular brush hog.

 

[2manyrocks]

I dont know why PT doesn’t use normal gull wing blades bolted to a stump jumper like this. Looks like you angled the PT plate enough to point the deck away from the operator, too. How does your PT handle this setup without any wheels on the cutter like PT puts on theirs?

 

[joshlee]

Your photos give me some ideas for my bush hog. I would like to fix the quick attach plate at an angle like yours, so that I can come down on top of a brush pile like yours can. I have the PT bush hog. I already added the stump jumper and gull wing blades.

 

[zzvyb6]

WOW ! Nice.
I suggest you locate a 4 yoke equivalent CV joint instead of the 2 joint unit. This because ANY misalignment along the axis connecting the shafts will introduce a torque variation that will fail a bearing, shaft, or seal, or even the mounting plate. Your installation is begging for a tri-pod joint to be put there from a front-wheel drive car's outer driveshaft.

 

[MossRoad]

View attachment 3419125View attachment 3419126View attachment 3419127View attachment 3419128
That pump that I have it turns the PTO at 400 RPMs, but the shaft is a one and a half to one so my blades are spinning at 600 RPMs it works better on it than it did on my yanmar tractor
It cuts under her brush really well briars and tickets. You just raise it up over the top of them said the blade at a 45 degree angle so it doesn’t kick debris back at you and just set it down and it just chews it right up.View attachment 3419130
If I remember correctly, I bought that at the surplus center the yolks were bought at my local agricultural store. They were for my PTO on this particular brush hog.

Nice job!

 

[2manyrocks]

Your photos give me some ideas for my bush hog. I would like to fix the quick attach plate at an angle like yours, so that I can come down on top of a brush pile like yours can. I have the PT bush hog. I already added the stump jumper and gull wing blades.View attachment 3421513

Did you drill out a standard stump jumper to bolt up to the PT center drive?

 

[Tchamp]

I dont know why PT doesn’t use normal gull wing blades bolted to a stump jumper like this. Looks like you angled the PT plate enough to point the deck away from the operator, too. How does your PT handle this setup without any wheels on the cutter like PT puts on theirs?

I’m going to put a set of wheels on the front and the back of it that like casters that swivel I haven’t gotten them yet, but I just float it on the big brush and stuff right now. I’m going through the woods cut and I just let it float about 3 inches above the ground and let it cut

 

[joshlee]

Did you drill out a standard stump jumper to bolt up to the PT center drive?

Yeah, I took it to a Machine Shop and they drilled out those holes to attach it. I’ve been using it now for a few years and it works out well.

 

[2manyrocks]

Where did you buy your stump jumper?

This is where I bought laminated wheels and yokes for my pt cutter. Quality Laminated Tires | High Grade Manufacturing

 

[joshlee]

That was years ago now, and I remember I googled “stump jumpers”and came up with the size that I have. Next week I can measure the stump jumper and the blades for you. I do know where I got the bolts for it because I have that saved in a file.

 

[joshlee]

 

[joshlee]

I was looking at the PT bush hog and thinking about how I could redesign the angle of the quick attach plate, and then I saw that hole that I forgot about. This made everything easy thanks to some Power Trac engineer.

 

[joshlee]

 

[joshlee]

 

[joshlee]

The stump jumper is 20” in diameter and the blades are 22” from the center of the hole. This is probably my favorite attachment, because I’m so amazed of how much work can be done with it. It’s also such a crude machine, as it has no mercy on brush or small trees.

 

[2manyrocks]

Your photos give me some ideas for my bush hog. I would like to fix the quick attach plate at an angle like yours, so that I can come down on top of a brush pile like yours can. I have the PT bush hog. I already added the stump jumper and gull wing blades.View attachment 3421513

These kind of blades and bolt mounts should come OEM from PT on their brush cutters.

The other issue is all the debris built up around the front passenger side tire and front of the machine. Maybe not the best way, but I installed a large piece of L angle as a deflector on the rear discharge of my cutter which helped reduce the build up.

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  deck clearance.jpg

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[joshlee]

These kind of blades and bolt mounts should come OEM from PT on their brush cutters.

The other issue is all the debris built up around the front passenger side tire and front of the machine. Maybe not the best way, but I installed a large piece of L angle as a deflector on the rear discharge of my cutter which helped reduce the build up.

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  deck clearance.jpg

  1.5 MB · Views: 169

That’s a good idea. I often think about doing something like that.

Yeah, it would be great if PT would offer the stump jumper and hinged blades.

 

[2manyrocks]

The reason for using angle was to extend the deck enough to be sure the blades couldn't come into contact with the deflector. I was concerned that it might clog up the deck in use, but it hasn't been a problem. Most of the debris just shoots out the front now.

 

[joshlee]

That’s good to know; I’ll keep that project in mind.

I once thought about using chains at the rear of it, but I’m glad I didn’t because those blades run close to the outside.

 

[2manyrocks]

The blade tips on mine seemed so close to the edge of the deck that I was afraid they would hit chains, especially if I was on a slope where the chains could get under the deck. Already had the angle and it was easier to install than fabricating something to hold individual chains.