790  Post hole digger: Tractor Implements  -- Tractor Attachments Implements 3ph Discussion Forum and Review 790 Post hole digger: Tractor Implements -- Tractor Attachments Implements 3ph Discussion Forum

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 03-13-2001, 12:07 Post: 25456
Rob Munach



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 790 Post hole digger

I am building an open shed supported on 6 telephone poles. The poles will stick out of the ground approximately 10ft. I want to bury them approximately 4 ft. in the ground for the lateral stbaility of the structure. I am considering buying a post hole digger for my 790 (25 pto HP) with a 12" auger. eDpending on the size of the poles, I may also try a 9" auger. Is this an unreasonable feat for the 790 or should I hire someone? Will the augers dig to 4ft? I will need the post hole digger in the future for much smaller diameter holes, so this is not a one time use.






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 03-13-2001, 12:35 Post: 25457
Bird Senter

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 790 Post hole digger

Rob, all the 3-point post hole diggers I've used, or seen used, on compact tractors will go less than 3 feet deep. If the augers were much longer, the 3-point couldn't pick them up high enough to clear the ground to transport them. However, you can buy extensions of various lengths, so you can drill part way, add the extension between the auger and the gearbox or head and go on down to 4'. And yes, your tractor should have no problem using one unless you have some really bad terrain to drill in, such as rock.






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 03-13-2001, 18:26 Post: 25471
Bruce Pirger



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 790 Post hole digger

Useless message...but I will never forget the Sunday evening when I completed my 24th hand-dug 4' deep post hole...JUST IN TIME for the farmer down the road to happen by with his big tractor and auger and ask me if I needed a hand...Argh!






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 03-14-2001, 01:02 Post: 25484
JonB



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 790 Post hole digger

Rob, I've a 4100 (16HP PTO) a Bug Hog auger with hydraulic down pressure. I've been able to get down four feet, but never consistently. The most important factors seems to be (1) weight or down pressure put on the auger, and (2) soil condition. The 4100 is too light to ever go through my hard pan, or my regular soil when it gets dry and hard (concrete clay). It does fine when the soil is moist. If you have hard stuff, you need a much heavier machine than I have ... and Bird is right, if soil builds up on the drill, I have to manually assist in raising it out of the hole. I still love it. Best of luck. JonB






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 03-15-2001, 00:59 Post: 25531
droz



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 790 Post hole digger

It may not exactly relate to your situation but I have a 43 HP Bobcat with a very high torque post hole digger. It works well of course but there are situations, especially if you find a big rock, that it simply cannot complete the hole. It tends to then wander off-center but that is hard to see while you are digging. It will easily go four feet or more if there is no great interference. If you don't have a lot of holes to dig it probably isn't worth getting one, especially if it isn't heavy duty. I aslo ended up bending one of the hydraulic cylinders due to a poor design on their part.






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 03-15-2001, 08:30 Post: 25537
David W. Walker



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 790 Post hole digger

I don't know if your 790 has a loader or not, but I have been able to push the front of the tractor up a foot with the loader to allow me to go deeper in the back with the auger. This might work for ya too.






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 03-15-2001, 18:56 Post: 25555
Michigander



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 790 Post hole digger

Rob, for the cost of a digger, you may want to consider renting one. Around these parts, you can rent one for $35 to $40 per day. If you don't have rocks it should only take an hour to put your holes down. Most of the augers are 42 inches so you may have to finish them by hand unless the loader idea gives you enough extra depth. I've been using my old JD 40 to dig some fence post holes and I barely run it faster than an idle. It's been to muddy to use my TC40D, I don't want to get it dirty!






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Discussion Boards > Active Subjects > Messages as Posted > Tractor Implements Forum

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