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[Towertalk] Tubular Telescopic Masts

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Subject: [Towertalk] Tubular Telescopic Masts
From: (Dino Darling)
Date: Wed, 11 Sep 2002 07:39:05 -0700
Send a message to Chip @  He has 2 on his side yard.  If I 
remember correctly, there is a small piece of channel, welded to the length 
of the inside tube that is "keyed" to a slot in a cap that is welded to the 
top of the outside tube.

These masts are NOT water pipe!  They are very thin!  It amazes me that 
they even work!  These engineers are really smart to get thin metal to work 
the way they do!

At 04:13 PM 9/11/02 +1200, you wrote:

>I've got some large diameter galvanised water pipe here (4" and 3" NB) and
>thought I'd
>make a telescopic mast like the Wilson.
>Can a Wilson owner tell me are the tubes in the Wilson mast all circular,
>and if so, how is the inner tube prevented from rotating in the outer tube.
>Is there a keyway of sorts.
>I'd be pleased to hear from you.
>73    Mike    ZL1BNB
>Self Supporting Towers, Wireless Weather Stations, see web site: 
>Call 888-333-9041 to place your order, mention you saw this ad and take an 
>additional 5 percent off
>any weather station price.
>Towertalk mailing list

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