I bought one of these things and a large Bosch demo hammer.
Works great in dirt. When it hits rock it stops and rod bends.
Is there a drill that works and does not come apart? (SDS-Max chuck)
On my hill in WV, about 4 feet down the sand and clay quit and I hit
solid sandstone. 3/4 rod did not help the situation. When the rod hits
refusal it is over.
Pete K4OM
On 9/17/2012 3:41 PM, Art Trampler wrote:
Many rental stores do not want anyone driving ground rods with a hammer drill,
although that is often effective. You can search for ground-rod driver bit and
get results like the following
http://www.amazon.com/s/?ie=UTF8&keywords=sds+ground+rod+driver&tag=googhydr-20&index=aps&hvadid=13454037450&hvpos=1t3&hvexid=&hvnetw=g&hvrand=1617235751764179773&hvpone=&hvptwo=&hvqmt=b&ref=pd_sl_2m495h2k2g_b
Most are designed for SDS chucks.
I live on a ridge in the Ozarks, so when I begin my new install (QRT NOW) I am going to purchase 3/4" x 10' ground rods from a local plumbing supply store in the hope that the larger diameter will not be as prone to bending when they are moving rocks.
I tried a small electric jackhammer and once I reached solid limestone...well
nothing moved and the ground rod bent!
I think that the bigger issue may be flex/bending of the ground rod which is why I am going the 3/4" route.
73,
Art K0RO
--- On Mon, 9/17/12, Jim Hargrave <w5ifp@gvtc.com> wrote:
From: Jim Hargrave <w5ifp@gvtc.com>
Subject: Re: [TowerTalk] Ground Rod Installing Machine
To: "Jerry" <grf@npgcable.com>, "Tower Talk" <towertalk@contesting.com>
Date: Monday, September 17, 2012, 2:22 PM
Jerry,
I have a lot of rocky limestone here at my QTH. It may be a little softer
than your terrain.
I use a small electric Jack Hammer. I would suggest you try that approach
before you buy something. You can rent one for a few dollars at most home
improvement stores like Home Depot or local equipment rental. You can slip a
short pipe over the Ground rod to help hold it and keep it from bending.
I have enough soil mixture that Bending has not been a problem. So far I
have not had to pre-drill any holes. it helps to sink the rod following a
nice soaking rain. In AZ you may have to fake that one with a garden
hose...Hi.
73s de Jim
W5IFP
> -----Original Message-----
> From: TowerTalk [mailto:towertalk-bounces@contesting.com]On Behalf Of
> Jerry
> Sent: Monday, September 17, 2012 12:58 PM
> To: Tower Talk
> Subject: [TowerTalk] Ground Rod Installing Machine
>
>
> I've finally convinced our local Club to purchase a "grounding rod
> installation drill" for use by our members. This is almost a necessity
> in the desert rocky soil here in the desert. Any suggestions
> as to make
> or model...and also the source of drill bit to use with 5/8"
> ground rods?
> Tnx
> Jerry France
> K7LY
> London Bridge ARA
> Lake Havasu City, AZ
> _______________________________________________
>
>
>
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