Results 1 to 10 of 10
  1. #1
    Gold Member
    Join Date
    Dec 2007
    Posts
    499

    Default I want to build a tree shear.

    He concept is simple, but I want to be able to cut approx 12 inch trees off within a couple inches of ground level. I like the style that is like a big pair of scissors with one side having a hawk bill shape, cutting edge on the other side. Where my problem begins is I can't bend the steel, so everything has to be plasma cut and welded. All I have to machine the pivot point is a drill press. Kinda limited in the machine tool department.

  2. #2
    Super Star Member J_J's Avatar
    Join Date
    Sep 2003
    Posts
    16,737
    Location
    JACKSONVILLE, FL
    Tractor
    Power-Trac 1445, KUBOTA B-9200HST

    Default Re: I want to build a tree shear.

    Here is a link to some tree shear pictures that I posted a while ago.

    http://www.tractorbynet.com/forums/b...r-build-3.html
    Last edited by J_J; 09-08-2012 at 06:40 PM.
    J.J.

    When I works, I works hard. When I sits and thinks, I goes to sleep.

    Git er done.

  3. #3
    Gold Member
    Join Date
    Dec 2007
    Posts
    499

    Default

    Thanks JJ I saw those. I need to figure out the pivot pin. Not sure how tough it needs to be to cut 12 inch.

  4. #4
    Super Member JerryG's Avatar
    Join Date
    Apr 2000
    Posts
    7,191
    Location
    Northwest Arkansas
    Tractor
    MF 1440-4 PowerShuttle

    Default Re: I want to build a tree shear.

    Just something to think about. You are going to need a good size tractor for a 12" tree shear.

  5. #5
    Gold Member
    Join Date
    Dec 2007
    Posts
    499

    Default

    I plan to run it off of my ctl 70

  6. #6
    Platinum Member Domush's Avatar
    Join Date
    Jun 2011
    Posts
    849
    Location
    Kentucky, US
    Tractor
    1981 Yanmar 336D

    Default Re: I want to build a tree shear.

    Quote Originally Posted by Rio_Grande View Post
    All I have to machine the pivot point is a drill press. Kinda limited in the machine tool department.
    Easy means for a pivot point is to plasma cut a rough circle, then weld in a short piece of pipe and use a slightly smaller diameter steel bar as the pivot. Don't kill your drill press (and bits) trying to drill a hole that massive.
    It is the mark of an educated mind to be able to entertain a thought without accepting it. ― Aristotle

    Yanmar 1981 YM336D

    From this . . . . To this
    ...

    Check out the full restoration project: Part 1 - Part 2 - Part 3 . . . . Adding gauges? How-to

  7. #7
    Gold Member
    Join Date
    Dec 2007
    Posts
    499

    Default

    I have done that on several different projects, but nothing that has to hold the kinds of force this will require. I am thinking I should make the framework from at least 3/8. If I gusset it properly it should be tough enough and my plasma will cut it fine.

    I think I want a double shear as opposed to the single style. Double the fab, double the parts but it looks like it would be tougher in the long run. I noticed the bigger shears seem to be made this way. I like the one JJ attached to his post earlier, simple and minimal machining required. The problem is the two big heat treated jaws that have to be machined and tapered before assembly.

  8. #8
    Platinum Member
    Join Date
    Jul 2007
    Posts
    874
    Location
    WV
    Tractor
    John Deere 1026R

    Default

    The junkyard shears only have one moving jaw. I think 2 jaws are more for staying centered while closing and looks than anything but I don't have any experience with them

  9. #9
    Gold Member smiley's Avatar
    Join Date
    Dec 2003
    Posts
    435
    Location
    Upstate NY

    Default Re: I want to build a tree shear.

    I have no knowledge on this subject but in thinking about it, would these weld on 3 pt lift arm ends simplify the dilemma of the pivot point, with the stub extended and your blade welded at 90 degrees? Maybe even a second one on the other end to attach the cylinder?? I think it would take some serious welding however you do it.
    THREE POINT LIFT ARM REPAIR END WELD-ON TLS311F | eBay

  10. #10
    Veteran Member
    Join Date
    Sep 2007
    Posts
    1,890
    Location
    Doniphan, Mo.
    Tractor
    Kubota L4240, B7800 & BX2660

    Default Re: I want to build a tree shear.

    Man he is getting more then retail + shipping. You can get them at any farm store for less...

Similar Threads

  1. Starting a tree and brush shear build
    By stuartmcraycattle in forum Build-It Yourself
    Replies: 33
    Last Post: 02-18-2012, 02:07 PM
  2. Tree Shear
    By J_J in forum Power Trac
    Replies: 0
    Last Post: 12-10-2010, 02:59 PM
  3. Tree Shear
    By arkkid in forum Attachments
    Replies: 8
    Last Post: 12-10-2010, 01:47 PM
  4. Tree Shear
    By jfw in forum Kubota Owning/Operating
    Replies: 7
    Last Post: 11-22-2004, 11:58 AM
  5. Tree Shear
    By texbaylea in forum Build-It Yourself
    Replies: 7
    Last Post: 02-26-2004, 08:26 PM

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
  •  
© 2014 TractorByNet.com. TractorByNet is a registered trademark of IMC Digital Universe, Inc. Other trademarks on this page are the property of their respective owners.