I have a Bosch demo hammer (largest hand held) for driving rods and used
for much concrete demo/drilling. I made a rod driver from the shank of
a broken carbide drill by MIG welding on a sch 40 pipe sleeve. It
wouldn't stay together however as the weld alloy can't handle the shock
and the tool steel doesn't take the weld. Best to spend a few bucks for
the Bosch or Makita tool made for driving rods, probably S7 steel. It
works fine for me.
Grant KZ1W
On 10/15/2013 1:29 PM, Patrick Greenlee wrote:
Rick, it seems there is no free lunch. I read the specs on all three
demo hammers you gave ID numbers for and although any of the three
"might" work in some situations only a trial will tell. Comparison to
mine is difficult as I don???t have a ft-lb rating for mine only the
blows per minute at 1100 to 2100. Mine is rated at 16 amps.
It it were me and I were starting fresh I would buy the #68150 which
is on sale now for $329. I'd buy an extra chisel and convert it to a
ground rod driver by cutting it off and adding a piece of tubing as
previously mentioned. Then I'd try it in the toughest soil I had and
see if it was acceptable. If not, take it back and get the next size
up as they have a 100% satisfaction guarantee.
One small downside is that the two candidates I mention use different
size chisels, i.e. 28mm hex and 30mm hex. I would do a trial fit of
the 28mm in the tool intended to use 30mm tool as I suspect it would
work and save you a little expense and hassle. Of course the HF folks
may deny that but remember they aren't users, just low wage stock guys.
Interestingly the larger more powerful tool lists the smaller size
tool shank. My tool size is 3/4 inch hex, a bit smaller than the ones
available now and it is plenty sturdy driving many rods without wear
or damage.
I also use mine to take out old concrete and even tried it for driving
T-posts with mixed results. I can break/shape landscaping boulders.
Good luck to you whichever way you choose to go.
73
Patrick AF5CK
-----Original Message----- From: Richard Karlquist
Sent: Monday, October 14, 2013 2:25 PM
To: towertalk@contesting.com
Subject: Re: [TowerTalk] Driving ground rods
On 2013-10-14 11:49, Patrick Greenlee wrote:
If anyone is interested in buying a Harbor Freight (inexpensive) demo
hammer don't buy the smallest one. They don't carry the one I have
anymore but they have a larger one and a smaller one. I have seen
both. Don't get the smaller one. Mine works pretty good and the
The HF web site shows:
Model 68147, 15 amps "vertical", $499 list
Model 68150, 11 amps "horizontal", $399 list
Model 68148, 10 amps "horizontal", $199 list
So which is the good and the bad? What doesn't work with the bad one?
Rick N6RK
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