[TowerTalk] 2" O.D. Pipe???

[Stan Stockton]

Just my opinion....  1.5 inch schedule 40 may be fine if you have some  
big tribander or 35 foot monobnder and it is mounted right above the  
top bearing.  If you are stacking antennas on the mast, forget it.   
For years I had a 1.5 with a 1.25 telescoped inside and welded on both  
ends.  All was fine with a very large monobander just above the top of  
the tower until a big ice storm broke one side of a boom truss.  Then  
the imbalance bent the mast.  Had the truss support remained intact,   
I think all would be fine.  Certainly I believe using an expensive  
mast on a tribander of any size mounted right at the top of the tower  
is a waste of money.

Stan, K5GO

Sent from Stan's IPhone

On Mar 18, 2010, at 4:21 PM, "Robert West"  
<robert.west at eatmoresoap.com> wrote:

> Again, this stuff hasn't seemed thin at all.  Now if I was using the  
> 2" EMT,
> THAT is definitely thin.  So far it's been solid for me.
>
>
>
> -----Original Message-----
> From: towertalk-bounces at contesting.com
> [mailto:towertalk-bounces at contesting.com] On Behalf Of Julio Peralta
> Sent: Thursday, March 18, 2010 7:36 AM
> To: 'Tower and HF antenna construction topics.'
> Subject: Re: [TowerTalk] 2" O.D. Pipe???
>
> I once had a major problem using fence post material for a mast. It  
> bent
> just above the top of the tower and became a real problem to take  
> down. The
> material is very thin and not very strong.
>
> Julio, W4HY
>
> -----Original Message-----
> From: towertalk-bounces at contesting.com
> [mailto:towertalk-bounces at contesting.com] On Behalf Of Robert West
> Sent: Wednesday, March 17, 2010 10:32 PM
> To: 'Tower and HF antenna construction topics.'
> Subject: Re: [TowerTalk] 2" O.D. Pipe???
>
> I use Chain Link Fence posts from Home Depot.  It's 2" outside  
> diameter and
> looks to be DOM.
>
> Bob-
>
>
> -----Original Message-----
> From: towertalk-bounces at contesting.com
> [mailto:towertalk-bounces at contesting.com] On Behalf Of EZ Rhino
> Sent: Wednesday, March 17, 2010 6:41 PM
> To: Tower and HF antenna construction topics.
> Subject: Re: [TowerTalk] 2" O.D. Pipe???
>
> You need tubing not pipe.  Pipe is measured by ID, tubing by OD.   
> You want
> DOM (drawn over mandrel) tubing, which is only available at steel  
> suppliers,
> not Home Despot.
>
> Chris
> KF7P
>
>
>
>
>
>
>
> On Mar 17, 2010, at 16:36 , k2qmf at juno.com wrote:
>
> Hello All,
>
> I went in search of 2 Inch O.D. pipe
> on the internet!!
>
> Guess what?  I can't find any!!!!
>
> The outside diameter of pipe is
> either 1.9" O.D. for 1.5 inch pipe or
> 2.375" O.D. for 2 inch pipe!!!
> Nothing in between....
>
> What am I missing??
>
>
> Thanks for any help for the uninformed...
>
> 73,
> Ted  K2QMF
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