Go to a scrap metal yard and see if you can find a 2 1/2" schedule 40
aluminum pipe. It's OD will be 2.875". Cut off some pieces 8 to 12 inches
long (your choice) then make a single cut long ways. Put a hose clamp
around the pipe and squeeze it. Slide half of it inside your 3" boom
sections. You will need to move the hose clamp a couple of times then take
it off and bump the sections together. I put a 1/4" stainless bolt through
both boom sections at each joint. All of my 54' booms are made like that.
Dave - K4SSU
----- Original Message -----
From: "Andre Van Wyk" <kr5dx@yahoo.com>
To: <towertalk@contesting.com>
Sent: Tuesday, September 22, 2009 7:18 PM
Subject: [TowerTalk] 3" Boom Joints
>I am planning the construction of 2 yagis, and I was wondering about "of
>the shelf" material to join 3" aluminum tube sections for very long booms.
>
> Any suggestions would be appreciated.
>
> 73
> de KR5DX
>
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