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Re: [TowerTalk] ohn 45G - Swaged or welded sleeves on legs ??

To: TexasRF@aol.com, towertalk@contesting.com
Subject: Re: [TowerTalk] ohn 45G - Swaged or welded sleeves on legs ??
From: jim Jarvis <jimjarvis@optonline.net>
Date: Thu, 26 Feb 2009 16:47:53 -0500
List-post: <towertalk@contesting.com">mailto:towertalk@contesting.com>
I yield to your expertise, Gerry.
(same for you, Steve)

I am, however, perplexed,  as the 45g I had in VT definitely did not  
have a sleeve.
Neither did two other 45g towers that I was involved in erecting.

n2ea

On Feb 26, 2009, at 4:31 PM, TexasRF@aol.com wrote:

> Having sold thousands of 45G sections over the past 30+ years, I  
> can state positively that 45G uses a joining sleeve on the lower  
> end of the section. There is NO swaged joint on Rohn 45G tower  
> sections.
>
> The legs are 1.25" o.d. and the sleeve is 1.5" o.d.. 25G is also  
> 1.25" o.d. but the wall is 16 gauge vs. 14 gauge for the 45G.
>
> I have no information about other company knockoffs.
>
> 73,
> Gerald Williamson K5GW
> General Manager/Texas Towers
>
>
>
>
> In a message dated 2/26/2009 9:23:53 A.M. Central Standard Time,  
> jimjarvis@optonline.net writes:
> Yo, Crazy!
>
> You're not getting it.
>
> 25g and 45g are identical in design.  The difference between them is
> that
> 45G has an 18" face, and 25g has a 12" face.  The legs are 1.25"
> diameter, swaged down
> on  one end, for a distance of about 5".   NEITHER of these use  
> sleeves.
> There ARE knockoffs which do.    But this doesn't matter.
>
> I assume you're trying to ERECT the tower, not just identify it.
> Knowing its manufacturer isn't going to change the fundamental  
> problem.
> So, let's refocus:
>
> The original question had to do with getting the sleeve over the  
> leg of
> whatever tower it is you have.  (Comments about not drilling out the
> bolt holes missed the point, although that's a good point, as well.)
>
> If I understand your problem correctly, what you need to do is get a
> piece
> of leg (or properly sized pipe) about 18" long, and use it as a test-
> fixture,
> to make sure it goes into each sleeve.   Use a rat-tail file to clean
> out any
> gunk or metal fingers in the way of mating, and be sure to grease the
> tube
> before inserting it into each sleeve.
>
> The second part of the problem is having all 3 legs align properly.
> this may
> require some 'adjustment' of one or more legs.   That 18" piece of
> pipe or leg
> will come in handy, at this point.
>
> Someone observed that it's easier to work this stuff, if gravity is
> helping you.
> The best test-fixture in the world is a tower base section, that you
> can test-insert
> each tower section into,  at ground level.   Once you know they're
> all good, then
> you can erect.
>
> Worst thing on the planet is to find you're wrestling with a 90lb
> section of 45g at 60', and one of the damned legs is off by an eighth
> of an inch.
> You've got nothing but air to work against, in straightening it.
> Trust me, this
> unhappy event will turn the air blue, and bring you off the tower in
> a hurry.
>
> N2EA
>
>
> Message: 6
> Date: Thu, 26 Feb 2009 08:42:02 +0200
> From: "Leonard Els" <leonard@cs.ukzn.ac.za>
> Subject: [TowerTalk] Rohn 45G - Swaged or welded sleeves on legs ??
> To: <towertalk@contesting.com>
> Message-ID:
>      
> <230B4EDCBAE94B4182F4466FDE2677E936609F@cirrus.winad.cs.ukzn.ac.za>
> Content-Type: text/plain;    charset="us-ascii"
>
> I am somewhat confused ... I was under the impression that the 45G and
> 55G have welded sleeves on legs, and 20G and 25G have swaged legs.   
> Some
> recent replies suggest that Rohn 45G has swaged legs and look very
> similar to 25G (except for different in size)?  Were there 2 different
> designs over the years?
>
> Not that the tower sections I have are 45G, but I was sure the welded
> sleeves were similar to 45G.  Can anyone shed some light?
>
> http://www.flickr.com/photos/35830322@N08/3308268909/
> <http://www.flickr.com/photos/35830322@N08/3308268909/>
>
> --
> CrazyHorse
>
>
>
>
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