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System for rapid installation of square posts piles
EW, we do this sort of thing pretty regularly,and have come up with a good workable system.
We have long pole jacks, like the ones used side-to-side to brace cargo in transport trucks, one end has a flat steel plate with large holes, pieces of rebar driven into the ground fasten this end to the ground near the base of the pole. The upper end has another smaller plate, with a web clamp setup to secure to the post. By using 2 of these, set 90° to each other, or 4 for bigger posts, one person can set a post to exactly plumb easily.
Best of luck.
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System for rapid installation of square posts piles
Jeff, you've got the jib arm part right, the problem is in your connection to the post. You are right, unless you dangle it from above you will not get it to hang plumb.
You then have two choices. Easiest would probably be to continue doing it the way are, but use something, like a collar fixed to the ground in the correct location to drop the butt of the post through, then merely plumb it and brace till the concrete dries.
The other way would be to come up with a hyd. grapple at the end of the jib arm, sort of like an articulated grapple on a log loader or truck. Something that would open and close like a fist, but have a powered wrist so that you could grasp the post and actually pivot it around in the air by hydraulic power.
This last one is not as bad as it sounds to accomplish. They make something similar already, but it's (IMHO) spendy for what it is. All you need is one fixed jaw on the boom arm, and one moving jaw to clamp down, and then a means of rotating slightly in a left/right (from the drivers seat perspective) plane, since the fore /aft rotation can be accomplished with the existing bucket curl circuit. So you only need to small cicuits, this could be accomplished with either an electric solenoid to divert an existing remote circuit, I don't know how your SSL is equipped, or if you have no remotes, by making a 3 way electric solenoid diverted cicuit from your bucket curl cicuit. This way all functions could be controlled using existing in-cab controls.
Besides, the less labour required, the more $$ there is left for the equipment, or in your case the equipment owner / operator. 
Best of luck.
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System for rapid installation of square posts piles
Jeff, I haven't had an email form you in a while, certainly don't remember one about the courses.
All but one job a long way from you are still on hold, politics and $$ fighting at it's best.
I have a lead on another kind of grapple though, I will send you and email a little later today, watch for it. An acquaintance in your old neck of the woods has something for sale which might be just the ticket.
Best of luck.
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System for rapid installation of square posts piles
EW, did you get my email?
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