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"
<[email protected]> 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: [email protected]
> [mailto:[email protected]] 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: [email protected]
> [mailto:[email protected]] 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: [email protected]
> [mailto:[email protected]] 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 , [email protected] 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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