Hi Scott,
The problem here is that we have many trees to be cleared along the
highway which tend to be thin regen, spindly, covered in Ivy and
bramble, making climbing an impossibility. As soon as you approach with
a MEWP the bucket pushes the stuff away. Petrol driven pole pruners
would be an advantage possibly with a hedgecutting head. Cutting from
the ground at an angle, not directly underneath does help provide a
steady work position and stance. Also as already stated the likelihood
of debris falling onto ones aching neck and head is reduced.
As for crown lifting over the highway at a recommended 2.5-5.2m
clearance, a pole saw could carry out this operation 10x (+-)as quickly
as it takes for each tree climbed.
Can anyone tell me about a machine that works for them?
Ian
-----Original Message-----
From: dscottcul@xxxx.net [mailto:dscottcul@xxxx.net]
Sent: 01 October 2007 12:15
To: UK Tree Care
Subject: RE: Pole Saw
As both old and North American, the term 'pole saw' does not immediately
bring to mind a power tool. The power tool you all seem to be
describing is indeed most often used here from an aerial lift (MEWP to
you) and is more often powered from the lift's hydraulic system than a
gas engine.
Generations of climbers here used a "pole saw" as an essential part of
kit. A curved saw blade, cutting on the pull stroke and attached to a
long pole. This could indeed be used from the ground, but was as or
more often used by the climber throughout the tree.
In latter days, with "tree climbing competitions" elevated to a sport
and work climbing elevated to a mystical/ethical/extreme exercise by
"climber jocks" who revel in clambering out to the end of each and every
branch like a squirrel to make a small hand saw cut.... pole saws may
have become less common.
But the point is you can make many cuts from the ground with an old
fashioned pole saw. The problem is somewhat reversed from the powered
version. The curved blade allows you to make the top cut quite easily,
but the undercut is difficult which leads no to binding but to ripping
of the underside.
I guess what is most foreign to me is the culture or regulatory
environment that makes working off the ground so difficult. A certain
German manufacturer of self propelled MEWPs would have the world believe
that Germany or even the EU has outlawed climbing altogether!
So what's the problem with just getting in the tree?
--
Scott Cullen
-------------- Original message ----------------------
From: "Ian Brewster" <Ian.Brewster@xxxxx.gov.uk>
Thanks Anthony,
< That is what leads to the saw getting jammed in the cut, not the
lack of power. >
I understand what you say but this is not the case. The model used
still lacked power even with a simple back cut without the compression
of wood, the branch sitting back etc. So I feel it is perhaps a fault
with the design and not the user, making a future purchase less
likely.
-----Original Message-----
From: anthony mills [mailto:anthony.j.mills@xxxxxx.com]
Sent: 01 October 2007 11:01
To: UK Tree Care
Subject: Re: Pole Saw
Mr. Brewster
In my experience it is not so much the lack of
power, which with a 25 or 30 cc engine and a 10" or 12" bar is usually
more or just slightly less proportionate to larger saws, as that,
unless working from above or to the side with a MEWP, it is very
difficult to place your cuts at the correct angles, especially for the
first two. So the branch twists instead of hingeing. That is what
leads to the saw getting jammed in the cut, not the lack of power. The
stub cut-off is usually easier, but it is also more likely, because of
the difficulty of precise control at that distance, that the tree will
be wounded when making the final 'clean' target cut. That is if you
haven't been whacked by the lump sliding down the pole instead of
falling straight....
I have to say that I do prefer them for work from a MEWP as I really
do not like working with a saw that close to the metal cage,
especially starting it up. The advantage of all "long-arm" machines,
and even more so with hedgecutters, is that the moving parts and
cutting edges are well away from the operator.
Regards, Anthony Mills
On 10/1/07, Ian Brewster <Ian.Brewster@xxxxx.gov.uk> wrote:
Working At Height Regulations don't apply to Pole saws, the machine
that allow you to cut branches from the ground without venturing
into the trees .
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