The guy wire assemblies are a military design (used on the AB-577 and
AB-621 that I'm aware of). I suspect the tower is military surplus
based on the use of the SM-D-423650/423651 guy assemblies and the
captive pin junction design.
Any design specifications would be buried deep in military procurement
- if you can find them <G>.
73,
... Joe, W4TV
On 7/24/2016 3:43 PM, EZ Rhino wrote:
I like the design too, but haven't ever seen it before. It looks like it may
have been intended as a temporary/portable type set up with the shorter
sections and the pins that are attached with wire lanyards. Let us know what
you find out.
Chris
KF7P
On Jul 24, 2016, at 11:24 , JVarney wrote:
I'm not familiar with this tower, but at first glance this looks to
be an excellent design for aluminum, very intriguing. One,
the mechanical collars for the brace joints are so much
better than welding as it avoids the large strength reduction
(over 50%) due to the loss of temper in the heat affected zone.
Two, the use of round legs and round braces -- much, much
better than angle shapes, which vary in strength depending
on load direction and are prone to local buckling. Three, the
use of collars for the brace joints avoid the loss of strength
due to drilling a hole in the leg for a bolt.
A formal analysis would have to be done but I would not
be surprised if this design turns out to be one the most
efficient uses of aluminum for a tower possible.
73 Jim K6OK
Jeff Liebermann wrote:
JV (K6HJU) obtained a rather odd aluminum tower and needs
help identifying the manufacture in order to obtain a spec
sheet. ... GALCO 13-199ASSY786G420-110
_______________________________________________
_______________________________________________
TowerTalk mailing list
TowerTalk@contesting.com
http://lists.contesting.com/mailman/listinfo/towertalk
_______________________________________________
_______________________________________________
TowerTalk mailing list
TowerTalk@contesting.com
http://lists.contesting.com/mailman/listinfo/towertalk
_______________________________________________
_______________________________________________
TowerTalk mailing list
TowerTalk@contesting.com
http://lists.contesting.com/mailman/listinfo/towertalk
|