What about granite?
Never mind. I think I already know.
bp
<part15sbs{at}gmail{dot}com>
On 3/23/2017 1:41 PM, Gerard Dupont III wrote:
Basketball sized limestone rocks either deflect the bit, same as a
pneumatic mole/missile, or the bit will crack the rock and still
possibly deflect. It's not that uncommon to bore half way through and
have to pull out and move over 12" bc of a rock. It's easier/quicker
to move than it is to try to go through a stubborn rock.
We had one yesterday where we hit a limestone shelf and the bit got
bound up and the torque from the machine snapped a drill rod in half.
I don't know what a shale shelf will do. We haven't run into that yet.
On Thu, Mar 23, 2017 at 7:48 AM, Adam Moffett <dmmoff...@gmail.com
<mailto:dmmoff...@gmail.com>> wrote:
What happens when the topsoil contains rocks the size of basketballs?
What happens if it hits a shelf of shale?
They never seem to have that in the demonstration videos. Google
fails to answer these questions for me.
------ Original Message ------
From: "Joe" <j...@highspeedcrow.ca <mailto:j...@highspeedcrow.ca>>
To: af@afmug.com <mailto:af@afmug.com>
Sent: 3/22/2017 10:54:09 PM
Subject: Re: [AFMUG] Vibratory Plow
We did extensive testing…
Our LM42 we bought was great with direct burial, but not good
with a chute for ¾” pipe.
It was reliable, but in harder ground it was an issue – no
setting for the angle when going shallow.
We even custom built a chute… great concept, but not practical
for our ground conditions
Single tires with good rubber is OK, duals are better for harder
ground.
*We went with a zahn (mini skidsteer) that is tracked and
articulated. *
The angle of the plow can be fully adjusted to the conditions
With a serrated blade, we can easily go through roots… /_even a
couple inches of frozen ground_/
We use a “Bullet” style to pull the conduit with a carrot or
kellum grip (Chinese finger trap)
https://www.youtube.com/watch?v=r9JhOQYxbwM
<https://www.youtube.com/watch?v=r9JhOQYxbwM>
video is for a silt fence, but it gives the idea of why this
works very well
A team of 2 guys can easily do 5-8 houses in a short day (conduit).
Tracks, and articulation…. Is the secret. So is slow and
constant speed
Rushing the install….. results in stretched/broken conduit.
We also bought the “mighty mole” attachment for compaction boring
under cement driveways.
This wasn’t cheap, but it is very effective / clean / fast
https://www.youtube.com/watch?v=1fGpRuNXjnM
<https://www.youtube.com/watch?v=1fGpRuNXjnM>
make sure to sleeve under driveways with good conduit before
pushing through fiber or a smaller conduit where needed
For some of the bigger acreages, we pull in with the RTX1250 and
use a bullet with 3/4 conduit or chute with 1.5”
The ground disturbance is more, but doing this… it impresses the
farmers when we are “rolling black coal”
We also protyped a conduit pressurized with water and a jet where
we attach a carrot. The water helps for sure, but at some point…
the added work for the water/equipment was just a little bit too
much to be practical. Another one we looked at was sending a
stream of water down the plow itself, but then we need the water
source moving… and it used a lot of water to be effective. Think
of how a big tree mover sends the big knifes into the ground
easier with water…that was the model we compared it to. Very
functional… just impractical in practice.
*From:*Af [mailto:af-boun...@afmug.com
<mailto:af-boun...@afmug.com>] *On Behalf Of *Jason McKemie
*Sent:* Tuesday, March 21, 2017 2:55 PM
*To:* af@afmug.com <mailto:af@afmug.com>
*Subject:* [AFMUG] Vibratory Plow
I'm trying to decide what make/model of plow to get. The
options, as I see them, are the Vermeer LM42, Ditch Witch 410SX,
or Case Maxi Sneaker. I'll be using this for customer drops as
well as some main-runs.
I like the mini excavator attachment for the LM42, although I
don't know how limiting this will be for the machine if I'm also
using it for customer drops. The drill attachment for the 410SX
also seems like it could be useful.
Anyone have experience with these machines? Recommendations?
Also, does anyone know what model of Case Maxi Sneaker this is?
http://i.imgur.com/APCL4TK.jpg
Thanks.
-Jason
