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  1. #11
    Veteran Member
    Join Date
    Jul 2003
    Posts
    1,438
    Location
    SW Indiana
    Tractor
    Ford 1920 4x4 (traded in on Kubota). Case 480F TLB w/4 in 1 bucket, 4x4. Gehl CTL60 tracked loader, Kubota L4330 GST

    Default Re: Stump Grinder Finished

    Meticulous!

    I wonder if that variable tooth spacing helps to discourage resonate frequency from setting up. They do that with some band saw blades and countersinks.

    John

  2. #12
    Platinum Member
    Join Date
    Dec 2006
    Posts
    696
    Location
    Columbus, Georgia
    Tractor
    Kuborta B2400, L2900, L4330; Caterpillar D3B, John Deere 455D

    Default Re: Stump Grinder Finished

    That is a very professional job. Congratulations.

    Forgive all the questions, but the details are very interesting.

    Did you make the wheel yourself?
    How thick is it and what diameter?
    Is that a standard bored hub with a key or is there a different attachment?
    With the bottom of the wheel turning away from the horizontal pivot point, do you have to apply downpressure to cut into the stump or do you have to hold it out of the stump?

    Congratulations again on a great job of designing, building, and finishing. The detail is very impressive.

  3. #13
    Bronze Member
    Join Date
    Apr 2007
    Posts
    51
    Location
    Chesterfield, Va.
    Tractor
    Kioti DK 35

    Default Re: Stump Grinder Finished

    John - - -I thought about balancing the wheel using a bubble balancer but decided not to bother - - - never thought about a resonance fequency. In the end the grinder is banging on roots and dirt so I don't think it matters.

    Farmer - - I posted pictures of the wheel during construction on Scotty370's stump grinder posting if you want to do a search. The wheel is 3/4" thick
    (1/2" would probably be fine), about 17" dia., the teeth add about 2" to the dia. Found it in the scrap yard. Looked to be flame cut and reasonably round. I bored a center hole and welded in a Dodge QD weld in hub. The drive shaft is 2" stainless steel with a 5/8" key to fit the hub. The QD bushing really tightens down on the shaft and key - - - hope there isn't a problem here because it takes a beating!

    Can't really tell if I am applying down pressure or holding the wheel up. I push the hydraulic lever to lower the wheel a little and then go back across. As I mentioned earlier if you take too much in a pass the wheel grabs - - -pulls down into the stump and stops the tractor dead - - - this has happen only twice and I had a lot of stump engaged with the wheel! I got a little too aggressive.

    Reggie

  4. #14
    Platinum Member BlacknTan's Avatar
    Join Date
    May 2006
    Posts
    879
    Location
    Adirondacks of NY
    Tractor
    Kubota B-7800

    Default Re: Stump Grinder Finished

    That is one awesome piece of workmanship!

    If I was a stump, and I saw that comin' at me, I'd be scared!

    Amazing job!

  5. #15
    Platinum Member
    Join Date
    Dec 2008
    Posts
    898
    Location
    Buffalo, New York
    Tractor
    318 John Deere, 4200 John Deere, 1947 John Deere "M"

    Default Re: Stump Grinder Finished

    Reggie- I apoligize for not properly commending you awesome craftsmenship! It's absolutely beautiful!! And functional! Guess that's a rather important factor! Just a couple things for the 'gallery'! The folks, (Jeff and others) at Greenteeth were great to me! I'm using a 22" wheel (1/2") with 18 teeth , 9 per side at 40* spacing. They did my wheel layout an suggested a pattern of three sequential teeth spiraling in toward the center hub, about 1/2" at each interval, at tooth two, and again at tooth 3. At tooth 4, again on the rim, Tooth five 1/2", in, Tooth 6, another 1/2", in. 7 on the rim...etc, etc,......... On the first lead position, I've got two straight teeth. At Position two, angle-out, angle-out. Position three, angle-out, angle-out. Position four, (Again, on the rim) angle-out on one side, and a reverse pocket that lines it up with the center of the wheels thickness. Position five and six, same as two and three. Position seven, angle out, and a reverse pocket, coming in from the opposite side from pos. 4! Position eight and nine are all outward angles. On smaller stumps, I can lower it down, and cut a stump like a chain saw!
    Two items you mentioned I've experienced: "Just 'cause you built it, doesn't mean your know how to use it!" I'm in the learning curve myself, and have had that wheel want to grab it's way across the stump (agressively) and stall the tractor! Also "Tight" tolerances, I believe, are a must. especially at the swing points! Also, I'm retro-fitting mine with those ground 'spikes' that you welded along your lower channel iron! When that thing want to "run-over" a stump, it will move my tractor, before stalling! Definately a lot of 'kinetic' energy happen' with that spinnin' wheel. Not a unit I'd lend-out to a friend. I'd rather go and grind their stumps myself! Good Luck! Again, beautiful work!~Scotty
    Edit-Darn, I didn't realize that post was so long! Sorry! ~S

  6. #16
    Veteran Member joes_427_vette's Avatar
    Join Date
    Aug 2004
    Posts
    1,243
    Location
    Midwest
    Tractor
    New Holland TC 55 DA, 4110 John Deere, HT 20 Bolens, 1456 Bolens

    Default Re: Stump Grinder Finished

    Great work Scotty and Reggie ! I looked at complete wheels at a web site and they were pretty costly. Looks like you guys got it done doing some engineering and cost savings. Best designs I have seen to date. Were these similar to production machines ?

  7. #17
    Bronze Member
    Join Date
    Apr 2007
    Posts
    51
    Location
    Chesterfield, Va.
    Tractor
    Kioti DK 35

    Default Re: Stump Grinder Finished

    Scotty, if I understand what you are saying about the Greenteeth they have more than just two designs - - one straight in and one angled out. I didn't get that when I talked to them. Now that the thing actually works I was planning to call them back and order a couple of spares - - - sounds like I should also ask about different teeth design. Although it works fine as is I may be able to speed up grinding and/or reduce the tendancy to pull into the stump. I have not experienced the wheel trying to pull itself across the stump - - -yet!

    Joe - - as for my design I just made a combination of the Vermeer grinder wheel and one I found on line that was for 3 point hitches. Used what I could find in the scrap yard and went with it. I don't think that wheel diameter is all that important as long as you get your tip speed up. Of course the larger the diameter the deeper you can easily grind.

    Reggie

  8. #18
    Silver Member Secret Squirrel's Avatar
    Join Date
    Oct 2008
    Posts
    126
    Tractor
    Mahindra 3510

    Default Re: Stump Grinder Finished

    I love it! Why can't I be creative like that?

    Rusty

  9. #19
    Gold Member mcd176's Avatar
    Join Date
    Nov 2007
    Posts
    489
    Location
    Wheeling, WV
    Tractor
    Kubota L4200 W/Cab(Mine), Kubota B2150 (Dads)

    Default Re: Stump Grinder Finished

    Now that is some nice work!
    ---------------------------------------------------
    Kubota L4200
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    John Deere 170
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    2001 GMC Sierra 2500HD W/Duramax Diesel

    2005 HARLEY DAVIDSON SOFTAIL FOR SALE!

    Link to my custom cab: http://www.tractorbynet.com/forums/b...completed.html

  10. #20
    Veteran Member GuglioLS's Avatar
    Join Date
    Feb 2005
    Posts
    1,112
    Location
    Edgewood, NM USA
    Tractor
    Jinma 354, Ford 1953 NAA Golden Jubilee, Komatsu Bulldozer

    Default Re: Stump Grinder Finished

    Reggie,

    Are you sure that's home made? Man that came out nice. If I had stumps to grind I would want one exactly like yours. Super nice build! I especially like ...... well everything. The grabber teeth at the bottom of the TPH frame are cool too. I hope you have an endless supply of stumps so that you can enjoy using it for all time.


    Larry
    My Fortune cookies:
    If you have to ask if you can do something, you probably can't.
    Life is short, especially if you forget to wake up the next day.
    He who hurries wastes time.
    If you must select between two evils, choose the one you haven't tried before.
    Tractor hydraulics is not rocket science.

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