Author Topic: fencepost pounders (Read 1148 times)

redpowerd · « **on:** March 06, 2004, 05:48:13 am »

ill be slowly fencin off 40 or so tiled acres of hay as soon as its dry enough to drive on. not lookin forward to the job.
i have been pushing posts in with my loader, but dont like what the rocks do to the bucket. i repaired it and dont want to repair it again.
i dont want to buy one, so any of you weldin types build one?
id like plans, if possible.
thanks!
jon

DanG · « **Reply #1 on:** March 06, 2004, 08:46:17 am »

Jeepers, Red! You must be EVEN cheaper than I am.

Pretty simple to make one, though. Just a piece of heavy steel pipe, with a plug welded in one end and a couple of simple handles. An old drive shaft makes a pretty good one.

redpowerd · « **Reply #2 on:** March 06, 2004, 09:32:26 am »

great idea, but the only movement i'd like my arms to do is run the hydraulics.

i forgot to mention the hydraulics
i just thought you'd know how stinkin lazy i am

shopteacher · « **Reply #3 on:** March 06, 2004, 09:32:38 am »

DanG,
How you get the machine to hold onto them handles and lift that driveshaft up and down?

I also have some fence to install and often thought of building a post pounder. I've seen the DOT drive guard rail post into the road berm and can't quite figure how the hammer is pulled up and let trip to come down and reapeat the cycle so quickly. Never had an opportunity to see one up close. Anybody have experience on one of these things?
I'm with you red, lazy.

redpowerd · « **Reply #4 on:** March 06, 2004, 09:45:10 am »

i think they may use a ram to compress a spring, once the sping compresses the ram lets go. dont know, but i know a spring is involved. my neighbor has used them, time for a vist.

Tom · « **Reply #5 on:** March 06, 2004, 10:58:38 am »

They drive pilings here with diesel.

The bottom of a cylinder is placed on the top of a pole. A bit of oil is injected into the cylinder and hammer is raised above it with the cables on a dragline. The hammer is dropped, driving the piling. The oil detonates and sends the hammer up the cylinder/tube and a fresh squirt of diesel is injected again. Every time the hammer falls it detonates the oil. To stop it you either don't inject oil or you catch the hammer with the cable.

SwampDonkey · « **Reply #6 on:** March 06, 2004, 11:05:52 am »

teach:

You can get post hole diggers for your skid stear, you can even rent them someplaces. If you hire out a post hole digger they charge you more than 40 head of cattle would be worth

shopteacher · « **Reply #7 on:** March 06, 2004, 12:17:54 pm »

SD,
I have an auger for the Massey Fergeson, but always looking to build something new. I like the idea of taking a pointed locust post and pounding it in the ground. No back filling, just onto the next post. Ya see I just can't figure out to do with all this spare time.

SwampDonkey · « **Reply #8 on:** March 06, 2004, 12:32:55 pm »

I remember seeing this old gent in his 70's driving posts by hand into his rock lined fence. Now there's a chap from the old school of hard knox, wouldn't you say?

shopteacher · « **Reply #9 on:** March 06, 2004, 12:45:40 pm »

Indeed I would.

Fla._Deadheader · « **Reply #10 on:** March 06, 2004, 01:05:18 pm »

Let's see now, Ahemmmm.

Them fanciful post drivers ain't nothin but a rubber roller, that's mashed against the back of a piece of Channel iron.
The roller is driven by the PTO and the handle thingy is spring loaded.

When the roller rotates, it picks up the channel, by friction. The channel has a cast iron weight fastened to the top. The bottom of the weight drops down upon the top of the post.

To trip the pounder, you mash on the handle and it loosens the friction drive of the rubber roller, thus, dropping the weight.

Nuttin to it. Roller bearings hold the channel into the frame that the whole deal is built around.

And that's all I got to say about that

Corley5 · « **Reply #11 on:** March 06, 2004, 01:21:01 pm »

FDH, You just decribed a Danuser brand post driver. Dad and I have one and it's quite a machine. We've driven 4" posts into our gravely soil without pointing the ends. It'll put metal highway sign posts in a couple whacks

but watch your fingers

Fla._Deadheader · « **Reply #12 on:** March 06, 2004, 01:37:13 pm »

Dat's Da one, Greg. Dat's Da one. Couldn't remember the name. 2 guys can wear out a 40 acre field in a couple of days, once ya get the posts laid out and the first wire strung out

redpowerd · « **Reply #13 on:** March 06, 2004, 01:48:35 pm »

i aint usin no auger! thats for ice fishin!
i want to set the corners, string the high tensle, then raise or lower it throughout the field with other posts. still goin for a neighborly visit tonight, ill get more info.
thanks

SwampDonkey · « **Reply #14 on:** March 06, 2004, 03:02:31 pm »

I wonder how good them post drivers work on hard gravelly till. Its quite a bit different than silt or sandy soil. You need a pick axe to dig below 2 feet into the subsoil. But you wouldn't be driving a post that deep unless your erecting a fence to keep deer in.

I remember driving posts here and we always used a 6 foot long piece of drive shaft with 30 lbs of weight to make the start hole, then a 5 lb mallet to drive'r in. Never took that long to do the fencing once you had the posts laid out. We used white cedar for fencing which lasted 20 or 25 years.

shopteacher · « **Reply #15 on:** March 06, 2004, 03:41:30 pm »

Can't quite picture what your describing FDH. Does anybody know if tractor supply sell these things? Need to have a look so I can figure out what I need. I'd rather mount it on the skidsteer as I'd have to take the backhoe off the Massey to mount it there.

redpowerd · « **Reply #16 on:** March 06, 2004, 04:35:17 pm »

the only one my gehl dealer sells is the skidsteer mounted one, and its a one man op. folds down to pinch the post. $$$
im to lazy to make enough money to spend on that one

my hayfield in question was just subsoiled 2 yrs ago. i dont need an inverted rocket launcher.

Fla._Deadheader · « **Reply #17 on:** March 06, 2004, 04:56:22 pm »

Been tryin to draw on the puter for an hour

Did it the old fashioned way. This is a ROUGH idea of what the driver looks like. Ya hafta have some(a lot) of imagination.

There are 2 channels, both "architechural" style, rounded corners and all steel is the same thickness. One has the 3 point hook-up for the tractor. The second channel rides inside the first, and the 4 bearings hold the second channel against the back side of the first.

The rubber roller is mounted on the back side of the first channel, and is spring loaded, to keep it pushed against the second channel. That roller is driven by the PTO, via the gearbox, and raises the second channel, with the BIG weight on top of it.

There is a handle and linkage system, where you let the second channel raise as high as the roller allows, and then you push or pull the handle, releasing the roller (like a clutch) and allowing the weighted channel to drop onto the post.

I could build the thing quicker than splain it

If ya don't get the idear this time, try Google

redpowerd · « **Reply #18 on:** March 06, 2004, 05:13:46 pm »

cant read your scratchin'
how heavy is the weight and how many whacks does it take?
i could see building one without the weight, rather streching a pair of springs. and instead of a roller and pto, use a hyd ram that picks it to a certian point and trips. i want to use a 3pt, with the top link replaced with another ram for anglin corner posts.
i think i gots a plan, deadheader, i think i gots a plan!
thanks

Ed_K · « **Reply #19 on:** March 06, 2004, 05:25:58 pm »

If you have a 3pt winch, theres your power for a ram. Now all you need is an upright guide, and weight.

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Author Topic: fencepost pounders (Read 1148 times)