Posthole Digger Post Hole Digger Warning

[Tom_H]

Pics continued from post @ end of previous page:

From the tractor.

From directly behind the gearbox.

 

[Tom_H]

The machinist didn't get the holes alligned such that the bolts would be flush with the PHD frame so I used some galvanized pipe as bushing/spacers to tighten things up flush.

The Pengo carbide teeth and tip. Note the carbide studs on the side of the tip.

 

[Tom_H]

Last two:

Sub soiler with ballast.

Subsoiler without ballast so welds can be seen.

 

[powerstroke444e]

Ken, because of the geometry trick that is used as Reg mentioned, the Hydraulic down pressure kit is the way to go in my opinion. What I do know for sure is that I have a lot of DG (decomposed granite) and when it is dry, it is just about as hard as rock. Using my post hole digger on it's own is about worthless, bought the down pressure kit for it and I can now dig holes as I please. In fact it works so good that I have not come across a hole that I couldn't dig to full depth in a couple of minutes.

We have one on a worksaver hd posthole digger and it has made it a 100% better tool when digin holes

 

[FlaDon]

In S. Fla rock, the only way to get an auger to dig in is with hyd down force on the unit. And even at that, you can pick up the rear of a tractor in some hard spots. Our augers have carbide teeth and wear resistant edges added too. But then we use D-8 and D-9 dozers to plow ground too. With carbide teeth on a 24" wide v-plow.

 

[Tom_H]

In S. Fla rock, the only way to get an auger to dig in is with hyd down force on the unit. And even at that, you can pick up the rear of a tractor in some hard spots. Our augers have carbide teeth and wear resistant edges added too. But then we use D-8 and D-9 dozers to plow ground too. With carbide teeth on a 24" wide v-plow.

Around here, vintners planting new vineyards have to rip the hardpan with this bad boy, a Cat D-11R, the biggest dozer Cat makes. And notice that even then, all the power has to be concentrated into a narrow tooth. The V you describe would get hung up because the pan is too hard to break otherwise.

 

[Reg]

Tom,
Nice job with the weights, but {there is always a BUTT (-: }
Those look like HANDLES !!!
I would be SO TEMPTED to just hang from them, maybe even climb on the digger frame and lean out there.
Actually that would probably be safer, since any loose clothing would be farther from the rotating parts.

I think my tractor needs an "operator absent" cut off switch under the seat ?

 

[archerm3]

You guys think nothing of cruising down the road 60-70+ mph in a 1-2 ton vehicle, the like of which slaughters people on a regular basis. But a big drill bit, spinning slowly, scares the he11 out of ya'??? Your local hardware will, no doubt, be glad to sell you all the shovels and bars you want.

I love this statement

 

[Reg]

I love this statement

I do understand the "crumple zone".
I also understand at least a little bit about statistics, anecdotal evidence, small sample sizes, exceptions to general rules, etc.

 

[Tom_H]

Tom,
Nice job with the weights, but {there is always a BUTT (-: }
Those look like HANDLES !!!
I would be SO TEMPTED to just hang from them, maybe even climb on the digger frame and lean out there.
Actually that would probably be safer, since any loose clothing would be farther from the rotating parts.

I think my tractor needs an "operator absent" cut off switch under the seat ?

Thanks for the compliment. As far as your warning, LOL, there's no way I'm gonna hang from or lean on that while that rig is turning.

Slow speed means nothing if there is sufficient torque or inertia in something. In Science, I call on students to volunteer to be subjects in an imaginary situation. I have two students stand against the wall and tell them that one will get hit by an object going one hundred miles per hour and the other by an object going one mile per hour. At first, each wants to choose the one mile per hour object. I then tell them that the wall is the base of a granite cliff, like El Capitan in Yosemite; the hundred mile per hour object is a very tiny dry spitball, and the one mile per hour object is a mile long freight train. Without the need for any force equals mass times velocity calculations, even little kids totally get it that the spitball will do nothing (except to an eyeball) and the train will completely crush them.