Stump grinder build

Yooper

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3901 LA525
May 31, 2015
1,541
541
113
NE Wisconsin
Can't wait to see some video of this beautifully constructed and pristine machinery getting covered in stump dust!
Got a GoPro for my birthday last summer. Been too busy to try it out but the grinder will be the perfect opportunity!
 

Yooper

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3901 LA525
May 31, 2015
1,541
541
113
NE Wisconsin
Found this 4" cylinder x 8" stroke in my collection of stuff that I'm going to modify for the swing cylinder. I remember buying this brand new in the early 90's and never used it.

I know there is going to be dangerous power with a cylinder this big and I will have to address this. But the speed will certainly be slower.

Took it apart and threaded the shaft to accept the rod end. Set to go back together and if the weather cooperates, will get some paint on it.
 

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Yooper

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3901 LA525
May 31, 2015
1,541
541
113
NE Wisconsin
Well, stump number one is in the books. It was about a 30" pine stump and it took about 15 minutes. I'll get faster as I get the hang of it.

One casualty was the flap. Worked good until I got on the far end of the stump at ground level. One experiment I might try is reversing the teeth and wheel rotation and see how that works. No hopping with the wheel sending the chips backwards toward the tractor, which is a good thing. Reversing it might be a different story. Only one way to find out. Then the flap wouldn't have to be so substantial in the back.

Took a close up of the teeth after grinding. Look good.
 

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bmblank

Well-known member

Equipment
2020 L3901HST, LA525 Loader, 66" Q/A Bucket, PFL2042 Forks, Meteor SB68PT Blower
Mar 4, 2015
667
296
63
Cadillac, MI
I know the saying is, "pics or it didn't happen," but in this case, I think it should be, "video or it didn't happen!"

Sent from my XT1254 using Tapatalk
 

tinkerwitheverything

Active member

Equipment
bx2370-1
Jun 3, 2015
319
72
28
Manitoba
It sure feels good grinding down stumps doesn't it. Especially with something that you've made yourself. I know I enjoy using mine. Good job on the build and be safe while using it.
 

JackJ

Member

Equipment
BX1870-1
Mar 14, 2016
264
9
18
Indiana
Congrats! If your rear flap is the only significant issue, then kudos on all the tricky decisions you had to make in the design and fabrication.

And yeah: put that GoPro to work. We need action scenes.
 

bmblank

Well-known member

Equipment
2020 L3901HST, LA525 Loader, 66" Q/A Bucket, PFL2042 Forks, Meteor SB68PT Blower
Mar 4, 2015
667
296
63
Cadillac, MI
That's moving some chips right there. That's awesome.

Sent from my XT1254 using Tapatalk
 

skeets

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Equipment
BX 2360 /B2601
Oct 2, 2009
14,617
3,449
113
SW Pa
Thats pretty cool,, and to think it only cost you about 30K to build,,,lol;)
 

Lil Foot

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1979 B7100DT Gear, Nissan Hanix N150-2 Excavator
May 19, 2011
7,576
2,636
113
Peoria, AZ
Amazing, looks like it work great! (but I knew it would!)
 

stoutakubota

New member

Equipment
B6200HSTD
Jul 11, 2016
12
0
0
Ontario Canada
I can only imagine how satisfying and rewarding it must be putting that beast into action.
So what, one or two down, 198 to go....lol, have fun.

You got me thinking surely the old timers solution involves less patience.....black powder or dynamite lol.

Thanks for video and taking us along for the ride, very cool build.
 

Billdog350

Member

Equipment
Kubota L3710 HST,L2230A QT,forks,Takeuchi TB125, 60" Luck Now pto Snowblower
Jan 6, 2014
468
10
18
East Hampton, CT
Congrats! Lots of hard work paying off! The satisfaction of engineering something yourself and making it work! Good old American ingenuity!
 

bmblank

Well-known member

Equipment
2020 L3901HST, LA525 Loader, 66" Q/A Bucket, PFL2042 Forks, Meteor SB68PT Blower
Mar 4, 2015
667
296
63
Cadillac, MI
No chatter with the wheel going the opposite of the original plan?

Sent from my XT1254 using Tapatalk
 

Yooper

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Equipment
3901 LA525
May 31, 2015
1,541
541
113
NE Wisconsin
Thanks everyone for all the nice comments! And I want to thank everyone that followed this build! You made me 'hold my feet to the fire'.

While I'm grinding stumps this fall, I'll be dreaming up something for my winter build.
 

Yooper

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Lifetime Member

Equipment
3901 LA525
May 31, 2015
1,541
541
113
NE Wisconsin
No chatter with the wheel going the opposite of the original plan?

Sent from my XT1254 using Tapatalk
I didn't notice any difference like I thought I would. Would like to get better control of the down feed cylinder to better control the depth of cut. Going to try machining some restrictor fittings for that cylinder.

Thanks for asking!
 

pacer

New member

Equipment
BX25D
Oct 3, 2015
37
0
0
Greenwood La USA
Yoop,

Your detailed and well written post on building this beautiful piece of machinery is undoubtedly hands down the most enjoyable post that I have ever followed!

I occasionally make a post with a few pics and it can take an amazing amount of time to do just a few pics with a good description/explanation - and here you are with dozens (hundreds?) of updates with dozens (hundreds?) of pictures. This had to eat into your work time on this involved build!!

And believe you me ---- we APPRECIATE IT!!

Bill Pace