[TowerTalk] Hammer Drill Chuck

J A Ritter w0uce at nc.rr.com
Wed Aug 30 22:31:25 EDT 2006

The chuck grabbed the ground rods and spun them like a drill bit...

Jack W0UCE

-----Original Message-----
From: towertalk-bounces at contesting.com
[mailto:towertalk-bounces at contesting.com] On Behalf Of Tom McAlee
Sent: Wednesday, August 30, 2006 10:25 PM
To: TOWERTALK at contesting.com
Subject: Re: [TowerTalk] Dismal Ground Rod / Hammer Drill Results Today

The hammer drill I use for ground rods can take bits up to 1.5" in diameter.

There isn't the typical chuck on the drill.  As with most drills its size, 
it uses a spline drive.

Makita makes a "ground rod attachment" for it, which does not have splines 
on it as you don't want it to spin.  I also just keep it in hammer mode when

installing ground rods.

Here is a picture of it with the ground rod attachment inserted:

It works wonders here in the mountains of southwestern Virginia where the 
ground is hard clay with lots of rock.  They make lots of chisel and 
concrete boaring bits for it as well, although thus far I've only used it 
for ground rods.

Tom, NI1N

----- Original Message ----- 
From: <john at kk9a.com>
To: <TOWERTALK at contesting.com>
Cc: <w0uce at nc.rr.com>
Sent: Wednesday, August 30, 2006 9:38 PM
Subject: [TowerTalk] Dismal Ground Rod / Hammer Drill Results Today

>I have never installed ground rods with a hammer drill so I will be
> interested in seeing the comments.  I will someday also need to install a
> lot of ground rods in NC clay.  How large of a hammer drill did you rent?.
> I own a small 1/2 one and it has a switch for hammer and non-hammer modes.
> Perhaps yours did too and it was not on hammer mode.  I also never 
> imagined
> that you would clamp the ground rod in the chuck and spin it,  I thought 
> you
> would clamp some type of socket and just used the hammering motion on the
> ground rod.
> John KK9A/4


TowerTalk mailing list
TowerTalk at contesting.com

More information about the TowerTalk mailing list