Ian White GM3SEK wrote in
:

There's a potential language gap here, but "electric hammers" fall into
three broad groups. Working downward in size:

Ian,

The device I use (Hitach PH65) would be called a small electric
demolition hammer or concrete breaker (and it does not have rotation, it
is not a drill).

It has sufficient power to break through / deflect thin shale or small
rocks in the path.

Smaller pneumatic drills which can operate chasing chisels etc *may* work
fine in soft soil for shorter electrodes. It is probably possible to make
a driving adapter by cutting the end off a chisel or point and welding a
peice of pipe of 100mm length and snug fit over the chisel to create a
socket to locate the adapter over the electrode.

I usually place a few wraps of electrical tape over the rod end to reduce
the damage to the copper cladding and reduce spreading or noodling of the
end of the rod, especially if another rod will be driven behind it using
a coupler.

Owen

Owen Duffy wrote in
:

Ian White GM3SEK wrote in
:

There's a potential language gap here, but "electric hammers" fall
into three broad groups. Working downward in size:

Ian,

The device I use (Hitach PH65) would be called a small electric
demolition hammer or concrete breaker (and it does not have rotation,
it is not a drill).

I should have found a URL with specs and a pic, shouldn't I?

Oh well, better late than never:

http://www.hitachikoki.com.sg/produc...ls.jsp?pid=181

It is a bit bigger than 2kg or 4kg... the machine alone is 15kg.

I should take a couple of pics of the machine, my adapter for earth rods,
and a commercial adapter for start pickets, and the thing being used to
drive 2.4m earth rod sections (which can go in behind each other with an
double tapered joiner).

I think the start picket adapter cost around A$160 from Makita, the bull
point I modified for the earth rod driver cost about A$30 and an hours
work to anneal, drill, and retemper.

Owen