Sure hope that "airplanes" comment was intended as sarcasm or sly humor...
They make airplanes (partly) out of structural foam, plastics and rubber,
too. EVERYTHING depends on details of the application, stresses, and
environment. For tough masting applications I can't imagine that anything
is
cost-efficient-competitive with high-tensile, galvanized steel tube of
appropriate diameter & wall.
Dick W4EA
-----Original Message-----
From: towertalk-request@contesting.com
Sent: Friday, January 04, 2013 20:04
To: towertalk@contesting.com
Subject: TowerTalk Digest, Vol 121, Issue 10
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Today's Topics:
1. Re: Source for 2" OD Mast (Jon Pearl - W4ABC)
2. Re: Source for 2" OD Mast (Richard Solomon)
3. Re: Source for 2" OD Mast (Drax Felton)
4. Re: Source for 2" OD Mast (Mike)
5. Steel & metal in Bay Area (Craig Brammer)
6. Re: Source for 2" OD Mast (N2TK, Tony)
7. Re: Source for 2" OD Mast (Rick Karlquist)
8. Re: Source for 2" OD Mast (EZ Rhino)
9. Re: Source for 2" OD Mast (Grant Saviers)
----------------------------------------------------------------------
Message: 1
Date: Fri, 04 Jan 2013 17:39:21 -0500
From: Jon Pearl - W4ABC <jonpearl@tampabay.rr.com>
To: Richard Solomon <dickw1ksz@gmail.com>
Cc: towertalk@contesting.com
Subject: Re: [TowerTalk] Source for 2" OD Mast
Message-ID: <50E75A19.5010104@tampabay.rr.com>
Content-Type: text/plain; charset=ISO-8859-1; format=flowed
Hi Dick.
Heights has got it: http://www.heightstowers.com/accessories.htm
73,
Jon Pearl - W4ABC
www.w4abc.com
On 1/4/2013 5:30 PM, Richard Solomon wrote:
> What about 6061-T6 Aluminum, 5/16 or 3/8" wall ?? I used a piece to
> hold a Pro-57A and a 402BA up for many years without any problems.
>
> They make airplanes out of this stuff, how bad can it be ??
>
> 73, Dick, W1KSZ
>
>
------------------------------
Message: 2
Date: Fri, 4 Jan 2013 15:52:26 -0700
From: Richard Solomon <dickw1ksz@gmail.com>
To: "Tower Talk\"" <TowerTalk@contesting.com>
Subject: Re: [TowerTalk] Source for 2" OD Mast
Message-ID:
<CAC5FBO-x+ry16dnAkopNXpM=NXHsDPQB0K7pZTGwCQV5My=wjA@mail.gmail.com>
Content-Type: text/plain; charset=ISO-8859-1
The weight difference and price difference are substantial. I leave it
to the PE's
to weigh in.
73, Dick, W1KSZ
On Fri, Jan 4, 2013 at 3:39 PM, Jon Pearl - W4ABC
<jonpearl@tampabay.rr.com> wrote:
> Hi Dick.
>
> Heights has got it: http://www.heightstowers.com/accessories.htm
>
>
>
>
>
> 73,
>
> Jon Pearl - W4ABC
> www.w4abc.com
>
>
> On 1/4/2013 5:30 PM, Richard Solomon wrote:
>>
>> What about 6061-T6 Aluminum, 5/16 or 3/8" wall ?? I used a piece to
>> hold a Pro-57A and a 402BA up for many years without any problems.
>>
>> They make airplanes out of this stuff, how bad can it be ??
>>
>> 73, Dick, W1KSZ
>>
>>
>
------------------------------
Message: 3
Date: Fri, 4 Jan 2013 17:53:22 -0500
From: "Drax Felton" <draxfelton@gmail.com>
To: <towertalk@contesting.com>
Subject: Re: [TowerTalk] Source for 2" OD Mast
Message-ID: <01b901cdeace$4cb56010$e6202030$@com>
Content-Type: text/plain; charset="us-ascii"
One thing I've learned from reading this forum over the years is that no
material is ever strong enough unless it's made of $500 a pound
unobtainium.
I gave up the hunt and have been using 6061-T6 aluminum tubing I found at
a
scrap yard. It works fine.
Might bend in a hurricane, but then again my house wouldn't have a roof so
I
don't care.
-----Original Message-----
From: TowerTalk [mailto:towertalk-bounces@contesting.com] On Behalf Of
Richard Solomon
Sent: Friday, January 04, 2013 5:31 PM
To: TowerTalk"
Subject: Re: [TowerTalk] Source for 2" OD Mast
What about 6061-T6 Aluminum, 5/16 or 3/8" wall ?? I used a piece to hold a
Pro-57A and a 402BA up for many years without any problems.
They make airplanes out of this stuff, how bad can it be ??
73, Dick, W1KSZ
------------------------------
Message: 4
Date: Fri, 4 Jan 2013 14:58:14 -0800
From: "Mike" <noddy1211@sbcglobal.net>
To: "'Jerry Gardner'" <jerryw6uv@gmail.com>,
<towertalk@contesting.com>
Subject: Re: [TowerTalk] Source for 2" OD Mast
Message-ID: <004a01cdeace$fb1125e0$f13371a0$@net>
Content-Type: text/plain; charset="us-ascii"
http://www.tashtowers.com/pricelist.html
I would get the real thing, easy drive down to Selma for you.
Mike, K6BR
-----Original Message-----
From: TowerTalk [mailto:towertalk-bounces@contesting.com] On Behalf Of
Jerry
Gardner
Sent: Friday, January 04, 2013 12:26 PM
To: towertalk@contesting.com
Subject: [TowerTalk] Source for 2" OD Mast
Anyone know of a source for a 2" OD 5 to 20 foot steel mast in the
vicinity
of the S.F. Bay Area? Something with around 87 k psi yield strength would
be
ideal.
Lots of on-line places sell these, but the shipping cost is greater than
the
cost of the mast itself. If there's someplace close to me that stocks
something suitable, I'll rent a U-Haul truck and go pick it up.
73, Jerry
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------------------------------
Message: 5
Date: Fri, 04 Jan 2013 15:11:56 -0800
From: Craig Brammer <craigbrammer@sbcglobal.net>
To: towertalk@contesting.com
Subject: [TowerTalk] Steel & metal in Bay Area
Message-ID: <50E761BC.9000805@sbcglobal.net>
Content-Type: text/plain; charset=ISO-8859-1; format=flowed
Alcometals.com, San Leandro, Vallejo, San Jose
via AE6AF
------------------------------
Message: 6
Date: Fri, 04 Jan 2013 18:42:38 -0500
From: "N2TK, Tony" <tony.kaz@verizon.net>
To: "'Jerry Gardner'" <jerryw6uv@gmail.com>,
<towertalk@contesting.com>
Subject: Re: [TowerTalk] Source for 2" OD Mast
Message-ID: <006501cdead5$2ed83f70$8c88be50$@verizon.net>
Content-Type: text/plain; charset=US-ASCII
Hi Jerry,
2" tubing fits fine in theTB-3. In 1978 I bought a 22' x 2" x 1/4"piece of
heat treated 4130. Also picked up a 12' x 1.5" x 1/4" of 4130. Pounded the
1.5" piece into the 2" piece for about 2'. It just wouldn't go anymore.
Drilled and pounded in a taper pin. Bought some cold galvanizing paint.
Sealed one end of the tubing. Poured in some paint in the other end and
sealed it. Rolled the tubing in the driveway to make sure everything was
well coated. Drained out the remaining paint. Then coated the outside.
Except for some touchup every few years the tubing looks good, inside and
out.
Had 8' of the 2" tubing sticking in the tower. Then hung a Christmas tree
of
antennas on the 24' sticking out the top. Swayed big time in heavy wind.
But
nothing ever bent or broke. Still using it today. 4130 seems to be good
stuff.
Don't know if you hot dip galvanize it if it will fit in a TB-3. I would
think not. But others who have done it can answer that question.
4130 is a cheap price when compared to all the other costs of the tower,
antennas and associated hardware.
73,
N2TK, Tony
-----Original Message-----
From: TowerTalk [mailto:towertalk-bounces@contesting.com] On Behalf Of
Jerry
Gardner
Sent: Friday, January 04, 2013 4:59 PM
To: towertalk@contesting.com
Subject: Re: [TowerTalk] Source for 2" OD Mast
On Fri, Jan 4, 2013 at 1:40 PM, Rick Karlquist
<richard@karlquist.com>wrote:
> Also, pipe is never 2" OD. So called 2 inch pipe has a 2.375" OD.
> It won't fit most tower hardware.
>
That goes to show how much I don't know about masts. I'm planning to use a
Rohn TB3 thrust bearing at the top of the tower -- what tubing OD would I
specify to a metal dealer to get something that is compatible with the
TB3?
Most of the places I've called sell the 4130 tubing "raw", e.g. not
galvanized. Does galvanizing the mast change its OD to the point where it
won't work in the TB3?
73, Jerry
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------------------------------
Message: 7
Date: Fri, 4 Jan 2013 16:12:42 -0800
From: "Rick Karlquist" <richard@karlquist.com>
To: "N2TK, Tony" <tony.kaz@verizon.net>
Cc: 'Jerry Gardner' <jerryw6uv@gmail.com>, towertalk@contesting.com
Subject: Re: [TowerTalk] Source for 2" OD Mast
Message-ID:
<78eddf811250217c79f252b43e0c0eee.squirrel@webmail.sonic.net>
Content-Type: text/plain;charset=iso-8859-1
N2TK, Tony wrote:
> On Fri, Jan 4, 2013 at 1:40 PM, Rick Karlquist
> <richard@karlquist.com>wrote:
>
>> Also, pipe is never 2" OD. So called 2 inch pipe has a 2.375" OD.
>> It won't fit most tower hardware.
>>
>
> That goes to show how much I don't know about masts. I'm planning to use
> a
> Rohn TB3 thrust bearing at the top of the tower -- what tubing OD would
> I
> specify to a metal dealer to get something that is compatible with the
Clarification: 2 inch TUBING has an OD of 2 inches
So called 2 inch PIPE has an OD of 2 3/8 inches
You want to buy TUBING for a mast. If what you buy has
an OD of 2 inches, you can be sure it isn't water pipe.
Yes this is confuzing.
Rick N6RK
------------------------------
Message: 8
Date: Fri, 4 Jan 2013 17:17:18 -0700
From: EZ Rhino <EZRhino@fastmovers.biz>
To: Towertalk <towertalk@contesting.com>
Subject: Re: [TowerTalk] Source for 2" OD Mast
Message-ID: <E1A02E99-C3D6-4697-B1E2-BA7BAC21760D@fastmovers.biz>
Content-Type: text/plain; charset=us-ascii
Somebody aught to put together a "TowerTalk Chronicles", or Tower Talk
Wiki,
or something. Not that we don't want to be helpful, but these topics do
repeat from time to time. Maybe it would be good to just say "look it up
on
the Wiki?"
Or just buy Steve's book, heh. :-)
Chris
KF7P
On Jan 4, 2013, at 17:12 , Rick Karlquist wrote:
N2TK, Tony wrote:
> On Fri, Jan 4, 2013 at 1:40 PM, Rick Karlquist
> <richard@karlquist.com>wrote:
>
>> Also, pipe is never 2" OD. So called 2 inch pipe has a 2.375" OD.
>> It won't fit most tower hardware.
>>
>
> That goes to show how much I don't know about masts. I'm planning to use
> a
> Rohn TB3 thrust bearing at the top of the tower -- what tubing OD would
> I
> specify to a metal dealer to get something that is compatible with the
Clarification: 2 inch TUBING has an OD of 2 inches
So called 2 inch PIPE has an OD of 2 3/8 inches
You want to buy TUBING for a mast. If what you buy has
an OD of 2 inches, you can be sure it isn't water pipe.
Yes this is confuzing.
Rick N6RK
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------------------------------
Message: 9
Date: Fri, 04 Jan 2013 17:04:17 -0800
From: Grant Saviers <grants2@pacbell.net>
To: Mike <noddy1211@sbcglobal.net>
Cc: 'Jerry Gardner' <jerryw6uv@gmail.com>, towertalk@contesting.com
Subject: Re: [TowerTalk] Source for 2" OD Mast
Message-ID: <50E77C11.3030608@pacbell.net>
Content-Type: text/plain; charset=ISO-8859-1; format=flowed
Jorgensen Steel, now known as EMJ Steel is in Oakland and if not in
stock will get whatever you want. They might deliver if headed to your
area but otherwise pick it up. Then take it to Pacific Galvanizing also
in Oakland if you want it galvanized. I've done business with both and
small orders were ok then - 2006. They moved my heat treated cast iron
from Chicago and apparently regularly fulfill orders that way without
the trans-ship cost added on, IIRC.
Tube Service is another supplier, big warehouse is in Milpitas, last I
saw, but I've not done business with them.
Grant KZ1W
On 1/4/2013 2:58 PM, Mike wrote:
> http://www.tashtowers.com/pricelist.html
>
> I would get the real thing, easy drive down to Selma for you.
>
> Mike, K6BR
>
> -----Original Message-----
> From: TowerTalk [mailto:towertalk-bounces@contesting.com] On Behalf Of
> Jerry
> Gardner
> Sent: Friday, January 04, 2013 12:26 PM
> To: towertalk@contesting.com
> Subject: [TowerTalk] Source for 2" OD Mast
>
> Anyone know of a source for a 2" OD 5 to 20 foot steel mast in the
> vicinity
> of the S.F. Bay Area? Something with around 87 k psi yield strength
> would
> be
> ideal.
>
> Lots of on-line places sell these, but the shipping cost is greater than
> the
> cost of the mast itself. If there's someplace close to me that stocks
> something suitable, I'll rent a U-Haul truck and go pick it up.
>
> 73, Jerry
> _______________________________________________
>
>
>
> _______________________________________________
> TowerTalk mailing list
> TowerTalk@contesting.com
> http://lists.contesting.com/mailman/listinfo/towertalk
> -----
> No virus found in this message.
> Checked by AVG - www.avg.com
> Version: 2012.0.2221 / Virus Database: 2637/5509 - Release Date:
> 01/04/13
>
> _______________________________________________
>
>
>
> _______________________________________________
> TowerTalk mailing list
> TowerTalk@contesting.com
> http://lists.contesting.com/mailman/listinfo/towertalk
>
------------------------------
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End of TowerTalk Digest, Vol 121, Issue 10
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