And one of the many reasons why Chris' product
http://www.kf7p.com/KF7P/SafetyStand.html is such a great idea for safely
working on a crank-up.
73,
Steve
W1SRD
________________________________
From: EZ Rhino <EZRhino@fastmovers.biz>
To: Steve Dyer <w1srd@yahoo.com>
Cc: Patrick Greenlee <patrick_g@windstream.net>; "towertalk@contesting.com"
<towertalk@contesting.com>
Sent: Thursday, August 1, 2013 5:01 PM
Subject: Re: [TowerTalk] Crankup Danger
This is one big aggravation I have with USTowers and some other Mfg's...the
lack of any stop blocks to support the moving sections. My LM470 has stop
blocks at the top of some of the sections (where you can't see them) but the
tower sections don't really rest on them when it is lowered. There isn't any
strength issue with climbing the tower per se, (it's not going to suddenly fall
over with your weight on it), it's the issue with the tower sections moving
(falling) and you losing fingers/toes. A good friend of mine, whose call sign
will remain unstated, was climbing his HG52SS which he thought was fully
nested. Well, it wasn't. Somehow one or both of the inner sections were hung
up and came down on his foot. Made a mess of his toes and he was lucky that he
didn't lose them. He still has the shoe as a reminder.
So the danger issue(s) are: 1) tower section movement, and 2) the same issue
as working on any tower...the height above ground factor. Don't EVER climb a
crank up if it is extended. The lay-over fixtures are great, although very
involved to do (lots of unbolting) and takes a lot of effort/cranking.
Chris
KF7P
On Aug 1, 2013, at 17:26 , Steve Dyer wrote:
I think crank-ups with positive pull-down are never fully "lowered" and are
still supported by their lift cable.
I know this is the case with my LM-470.
73,
Steve
________________________________
From: Patrick Greenlee <patrick_g@windstream.net>
To: towertalk@contesting.com
Sent: Thursday, August 1, 2013 11:45 AM
Subject: Re: [TowerTalk] Crankup Danger
Wouldn't you ordinarily lower a crank-up tower before climbing? If it were a
tilt over as well wouldn't you tilt it over instead of climbing it?
Patrick AF5CK
-----Original Message-----
From: Wilson
Sent: Thursday, August 01, 2013 1:22 PM
To: towertalk@contesting.com
Subject: [TowerTalk] Crankup Danger
Well, if the tower should telescope while you are on it, the shearing off of
fingers and the front of your feet might be considered an undesirable
possibility.
If you are on an upper section when the collapse occurs, you might get by
with just some foot damage and being thrown to the ground as the section you
are on drops into the next one down...
Your plan is much like the old EZWay towers. There's a book for the two
section 40 footer on BAMA. http://bama.edebris.com/manuals/ezway/rbs40
WL
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