[TowerTalk] (no subject)

[K8RI on TowerTalk]

The fencing material I've seen was very good. Yes, it had a welded seam but 
so does structural steel tubing which is what I'm using.  There *might* be a 
difference in quality control between the structural steel and fencing, but 
the fencing is strong.  I use it for my gin pole and have put some 
tremendous side loads on it bending the 16' gin pole nearly 3' out of line 
and it just springs back. It certainly was far stronger and could be bent 
farther than pipe without taking a set.

No, I'd not want to use it up on top, but the stuff I've used here for 
various purposes was very strong and of high  quality.  It is springy which 
is why I'd not want to use it up on top.<:-))  So *apparently* the quality 
may vary quite a bit.

Roger Halstead (K8RI and ARRL 40 year Life Member)
N833R - World's oldest Debonair CD-2
www.rogerhalstead.com (Use return address from home page)


> In a message dated 10/12/2006 5:36:36 P.M. Pacific Daylight Time,
> towertalk-request at contesting.com<mailto:towertalk-request at contesting.com> 
> writes:
>
>>  Sorry, but in all the piles I only saw one suggestion that  Im looking 
>> for.
>
>>  Im not looking for mail order, I need to  find mast material that I can
> obtain locally.   So far the Fencing  material is only one suggested.
>
> K7LXC Replied:
>    "It's already been pointed out that you're looking  for tubing - not 
> pipe.
> You need something like an SAE 1026 or A520 - something  in the 
> neighborhood
> of 50-60,000 psi yield strength I imagine. I didn't see  the original post 
> so
> I'm not sure what your specific application is, what  your proposed 
> antenna
> load is or what your county windspeed rating is. "
>
> And I add:  Fencing material is NOT what you want. I believe it has a 
> welded seam and will split at the first side load applied. I've seen 
> ground planes for low band commercial use up 20' or more on fencing 
> material. The first good wind and the "Pipe" split like a banana peel and 
> the antenna was over like it was being used for NVIS.
>
> Just my $.02
> 73
> K9WN  Jake
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