Towertalk
[Top] [All Lists]

[TowerTalk] New Source for Yagi Ubolts

To: <towertalk@contesting.com>
Subject: [TowerTalk] New Source for Yagi Ubolts
From: aa4lr@arrl.net (Bill Coleman)
Date: Mon, 11 Jun 2001 15:39:52 -0400
On 5/31/01 7:43 PM, David J. Windisch at davidw@copper.net wrote:

>It has been my experience, over the last 30 years, that the s/s I've used on
>antennas, subject to the magnet test, has not reacted with al antenna parts.
>It's still shiny-bright.  My 'control' s/s, not used in antennas because it
>was attracted, does have discoloration.   Should have mentioned that that
>'magnet test' came from the experience of chem-metallurgy types at
>Westinghouse in Baltimore.

Dave,

Apparently you haven't followed the origin of W7NI's hardware.

Original Rohn Tower bolts are either hot-dip galvanized, or in the case 
of Rohn 25 bolts, plated. Now, the plated bolts/nuts don't last terribly 
long in the weather (depending on your conditions) because the plating 
isn't thick enough.

Using stainless isn't advised. Although stainless is certainly a lot more 
corrosion-resistant, it isn't nearly as strong as other steel. And 
strength is certainly a key consideration for tower-leg bolts.

Stan found out about this mechanical galvanizing, which appears to offer 
the protection level of hot-dip galvanizing with much greater uniformity. 
Some Rohn U-bolts have the same problem (plated, not galvanized), so Stan 
offers these as well.

This hardware offers better strength than stainless, along with the 
corrossion protection of hot-dip galvanization.

So much for puffery. I'm pleased that Stan is extending his line of 
mechanically galvanized hardware. I've bought some myself. I haven't 
weather-tested it yet (since my tower is sitting in my basement still).

Let's not be so quick to denigrate things that we don't understand.



Bill Coleman, AA4LR, PP-ASEL        Mail: aa4lr@arrl.net
Quote: "Not within a thousand years will man ever fly!"
            -- Wilbur Wright, 1901


List Sponsor: Are you thinking about installing a tower this summer? Call us
for information on our fabulous Trylon Titan self-supporting towers - up to
96-feet for less than $2000! at 888-833-3104 <A 
HREF="http://www.ChampionRadio.com";>
www.ChampionRadio.com</A>

-----
FAQ on WWW:               http://www.contesting.com/FAQ/towertalk
Submissions:              towertalk@contesting.com
Administrative requests:  towertalk-REQUEST@contesting.com
Problems:                 owner-towertalk@contesting.com


<Prev in Thread] Current Thread [Next in Thread>