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Re: [TowerTalk] Climbing Glen Martin M-18 Tower

To: "Michael Tope" <>
Subject: Re: [TowerTalk] Climbing Glen Martin M-18 Tower
From: "Rick Karlquist" <>
Date: Wed, 6 Apr 2011 15:44:55 -0700
List-post: <">>
I just wanted to mention that 50 ft of this tower is easily
tilted up in one piece used the "falling derrick" method
as shown on my web site  So there is no need
to climb it to erect it (unless you are in a confined space).
Here is a reason why not to climb it that you might not have
considered:  If you distort the tower at all by stressing
it with your feet, the Hazer will no longer freely go up
an down, and may bind.  My tower has a VERY slight bend in
it that forces me to put a lot of slop in the Hazer adjustments.
I can't even use the "new improved" slider blocks.
This is the Achilles Heel of the Hazer design, which plagues
many poorly designed mechanical systems.  No allowance for
tolerances and no explicit springs anywhere in the system.
I see this kind of design error all the time.  Engineers
just don't think about the real world.

Rick N6RK

Michael Tope wrote:
> I was given 40ft of Glen Martin M-18 Aluminum Tower a few years ago
> along with the accompanying Hazer tram system. I am thinking of actually
> putting it up this summer. In theory with the Hazer, I shouldn't need to
> climb this tower, but if for some reason I do I was wondering if the
> M-18 sections are safe to climb? I weigh about 195 lbs and am a little
> concerned about the strength of the horizontal aluminum cross braces (I
> am worried they will bend. Anyone have experience climbing Glen Martin
> M-18?
> Thanks!
> Mike W4EF...........
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