Heard a story many years ago about a tower that was installed in KH6 with
stainless steel hardware and after time, with the constant trade winds, the
nuts all fell off.
There is vibration to contend with in certain places around the world.
Regards,
Mark, K1RX
On Wednesday, May 7, 2014 9:44 AM, Mark Pride via TowerTalk
<towertalk@contesting.com> wrote:
One other point on the tower hardware from Rohn these days. They have changed their hardware where the nuts are designed to be put on the bolt ONE time. To remove the nut, one will damage the thread of the bolt (sorry - forgot the description of this design - lock nut?). Guess the concept is, you put up a tower one time and never take it down! However to their point, it prevents nuts from backing off (good thing).
Regarding the new hardware you find in the tower leg of the new material - you
might want to change it. The current nut design has 3 indentations on the
surface - pretty easy to spot. Bolts are fine, just need to change the nuts.
Regards,
Mark, K1RX
On Wednesday, May 7, 2014 7:43 AM, Mike Ryan <mryan001@tampabay.rr.com> wrote:
Larry is correct in that both the 25 and 45 use different size bolts and if
my memory serves me, this would be 4 different sizes in the case of these
two tower types. I have never seen washers used with these. It is
noteworthy, that should you be putting tower sections up, to be ABSOLUTELY
sure that the legs are clear inside. Run a garden hose through the leg to be
sure there is no blockage, or even push a ground rod through each one for
example. I can't tell you how many times I have found blockage in the
legs...dirt, mud, bugs, etc. And while on the subject, occasionally found
that the blockage was TOWER BOLTS that were packed in the legs by the
manufacturer which had never been found/removed. -Mike
-----Original Message-----
From: Larry
Sent: Wednesday, May 07, 2014 5:47 AM
To: towertalk@contesting.com
Subject: Re: [TowerTalk] ROHN TOWER BOLTS
25G and 45G use two different sizes at each joint on each leg. I forget what
size they are offhand. DX Engineering sells leg bolts and their web site may
tell you what the sizes are or the perhaps the Rohn web site.
73, Larry W6NWS
-----Original Message-----
From: Cal Zethmayr
Sent: Wednesday, May 07, 2014 12:02 AM
To: towertalk@contesting.com
Subject: [TowerTalk] ROHN TOWER BOLTS
There is quite a debate at one of our local Saturday morning breakfasts
gabfests about Rohn Tower Bolts.
Some say that Rohn uses two different size bolt sets for each tower section.
Some say that Rohn uses only one size bolt-washer-nut sets for all towers.
So what are the facts?
Are there different size bolt sets for Rohn towers, and are they different
depending on the tower ? 25G, 45G and 55G?
Cal Z
W4GMH in Crestview, FL.
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