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  1. #1

    Join Date
    Dec 2003
    Posts
    579
    Location
    California , Idaho and a little island in Panama
    Tractor
    Kioti DK45TLB

    Default Post hole digger pto speed ?

    I finally got my Bush Hog Post Hole Digger mounted up today to my Kioti DK45 . This is the first time I have ever ran one . I was wondering at what speed should I run the PTO at ? This unit is used and did not come with instructions . I did cut a hole like butter when it was at a idle !!! I don't want to mess it up or bend something so whats the right speed ?
    Thanks ,
    Big Al

  2. #2
    Veteran Member
    Join Date
    Jul 2003
    Posts
    1,969
    Location
    Kansas
    Tractor
    2003 BX2200

    Default Re: Post hole digger pto speed ?

    Most of the posts I've read say idle, fast idle, maybe up to 1/2 throttle if you need to hurl the dirt some. Idle it till you get it digging to keep it from going crazy........

    Mine runs fine at a high idle.

    Good luck,
    Ron

  3. #3
    Bronze Member
    Join Date
    Feb 2004
    Posts
    62
    Location
    Northwest Indiana
    Tractor
    4300

    Default Re: Post hole digger pto speed ?

    On My JD 4300 it says put engine rpms ot 2500 when using pto. I have a tractor supply post hole digger and it worked fine at 2500 rpms.

    When you are putting the auger bit down, do it slow and take your time. Some times the dirt might be soft or you hit a root and the auger digs in so fast and deep that you can't get it out of the ground.

    Have fun!

  4. #4
    Super Member JerryG's Avatar
    Join Date
    Apr 2000
    Posts
    7,193
    Location
    Northwest Arkansas
    Tractor
    MF 1440-4 PowerShuttle

    Default Re: Post hole digger pto speed ?

    <font color="blue">idle, fast idle, maybe up to 1/2 throttle </font>
    This is the right speed. If you have soft dirt and it is going to fast you may find your self using a pipe wrench taking it out.

  5. #5
    Super Member Inspector507's Avatar
    Join Date
    Mar 2002
    Posts
    5,803
    Location
    Central Ohio

    Default Re: Post hole digger pto speed ?

    There's no way I'd run an auger at 2500 PTO speed, except to clean it off. I have always run mine at about 1000 or so, just above idle.

  6. #6

    Join Date
    Dec 2003
    Posts
    579
    Location
    California , Idaho and a little island in Panama
    Tractor
    Kioti DK45TLB

    Default Re: Post hole digger pto speed ?

    Thanks guys ! Anyone ever heard of a "power down" attachment you can add to a 3ph PHD ? I just talked with a guy whose has one and he swears by it . I can't figure out how one would work . Thanks again,
    Big al

  7. #7
    Epic Contributor Bird's Avatar
    Join Date
    Mar 2000
    Posts
    37,445
    Location
    Texas

    Default Re: Post hole digger pto speed ?

    Sticky, the rated PTO speed only means that you get the 540 RPM that's "recommended" for mowers especially, but also for some other implements like hay balers, tillers, etc. It doesn't mean that you have to run it at that speed, and no way would I run a post hole digger at that speed. You can do it, if you like, but that's far too dangerous for me.

  8. #8
    Veteran Member
    Join Date
    May 2001
    Posts
    2,385
    Location
    Michigan
    Tractor
    New Holland TC40D Supersteer

    Default Re: Post hole digger pto speed ?

    There is a low resolution picture of a downforce kit at Worksaver Post Hole Digger DownForce Kit

  9. #9
    Super Member Inspector507's Avatar
    Join Date
    Mar 2002
    Posts
    5,803
    Location
    Central Ohio

    Default Re: Post hole digger pto speed ?

    <font color="blue"> With the auger point in
    the correct position and all bystanders 10 ft. or more
    from auger, engage PTO with the engine at a little
    more than idling speed. Move the tractor hydraulic
    lift arm lever slowly to the down position. Allow the
    auger to dig until there is an indication of overloading.
    Raise the auger but do not allow the auger to
    come completely out of the hole. This allows auger
    to clean itself of loose soil. Lower the auger into the
    hole and continue this procedure until the desired....etc. </font>

    From the Bush Hog manualŠ.

    They do have a Power Down option as well
    <font color="blue"> C. A hydraulic hose must be connected from
    the relief valve tank port to the tractor hydraulic
    tank. This hose will return relieved hydraulic oil
    to the tank. Because fittings and hose lengths
    would vary with each different tractor, they are
    not supplied. Consult with tractor dealer to
    determine the best way to make connection to
    the hydraulic tank on your tractor. </font>

  10. #10
    Platinum Member
    Join Date
    Feb 2004
    Posts
    652
    Location
    Hereford, PA
    Tractor
    LK3054

    Default Re: Post hole digger pto speed ?

    BigAl,

    AS SLOW AS YOU CAN!

    I put in about 120 posts this summer with a Ferguson TO20 - trans driven PTO &amp; all. The holes were all different - some were soil all the way down (3'), some I hit stones after a foot. Generally here there are many smaller stones on top of the clay layer. When you hit those it binds up the auger and jams it - that is when you break the shear bolt. Of course, you will have gone to TSC and bought the entire bin of bolts, so you'll be prepared! It took a while to develop a technique, but here's what worked for me:

    1. Run it as slow as you can with out boging the tractor - this should be a heck of a lot easier with a DK45 than a TO20!

    2. Drop it in a bit, then pull it almost out and let it clear. Then put it back down (no jokes [img]/forums/images/graemlins/grin.gif[/img]). Lifting it up will sometimes pop the stones up so they don't jam.

    3. If you hear it hit stones, keep pecking at it - you'll eventually learn to tell when you are close to breaking a bolt. Then you have to decide how lucky you feel! You won't be able to avoid using the digging bar all the time [img]/forums/images/graemlins/mad.gif[/img].

    All of this is to keep the forece down on the shear bolts - if you are going slow the impact will be lower when you hit something. You don't need a lot of speed to dig a post hole - if the soil is soft, it'll go down fast enough, if it isn't more speed and power won't help.

    Lastly, I had trouble one time when I helped a friend dig a few holes in some sandy soil - I was used to my place, with clay under the soil, but under his it was sand. As soon as it dropped a foot, it got into the sand and started heading for China - really cought me off guard. With the slow hydraulic response on my old Fergie, I couldn't stop it in time. I didn't want to put in the clutch, because if it stops all the way down, with the TO20 I can't run the lift with out running the PTO, and when you start, before you can get any lifting force it's started turning and pulling down more.....then I have to disconnect the PTO shaft. It pulled down so far it bent &amp; broke the PTO adapter - another trip to TSC! You won't have most of those problems with a modern PTO and lift system, but make sure the PTO shaft won't bind when it is all the way down. I'm keeping the old Fergie, but I'll never dig another post hole with it!

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