You're against drilling holes, how significantly does drilling a hole
effect the element strength? When I lived near Chicago I had a homebrew
full sized 40m beam. I drilled the tubing and used eye-bolts to attach the
Phillystran truss. I also had a 90++ ft 80m dipole also with drilled
elements for the loading truss. The trusses were in the larger tubing
sections where pieces overlapped (double thickness) and I never had the
tubing fail, even in Chicago winters.
John KK9A
From: terry burge <ki7m@comcast.net>
Date: Mon, 13 Aug 2018 16:40:04 -0700 (PDT)
Been working on my 40 meter rotatable dipole I plan to put up at 124 feet or
so. But I'm worried about making sure whatever I come up with to fix the
3/16"
dacron truss lines to the elements out about 20' or so are secure. Dealing
with
the DXE tubing when it gets down below 1" or so I don't want anything too
heavy. Also don't want to drill and weaken the dipole. I actually came up
with
some 'rings' from Wilco just about the right size that would slip over the
0.5", 0.625", 0.750" to I believe the 0.875". There I could use 1/2"-1 1/4"
hose clamps to make sure the ring doesn't slip further up. Just the dacron
wrapped around the ring might be enough to keep that from happening but I
don't
trust it.
I'm not sure I could trust just using the hose clamps to hold the dacron line
but I don't want to drill and weaken the tubing in any way.
Any better idea? You can see a few pictures of what I'm building on my
QRZ/KI7M
page.
Terry
KI7M
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