To: | "Macie, Gordon" <GMacie@innotrac.com>,"'towertalk@contesting.com'" <towertalk@contesting.com> |
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Subject: | Re: [TowerTalk] 40 Meter Vertical Construction |
From: | Joe Reisert <W1JR@arrl.net> |
Date: | Thu, 13 Nov 2003 11:08:55 -0500 |
List-post: | <mailto:towertalk@contesting.com> |
Gordon, One of the "rules-of-thumb" used with tubing is to overlap 2-3 times the diameter of the element. Therefore, 5" is great on 1.625" tubing while only about 2-1/2" is needed on the .875" diameter tubing. Of course, more is OK but from an economy and weight perspective, less is better! 73, Joe, W1JR At 05:17 PM 11/7/2003, Macie, Gordon wrote: I am building a 40 meter 4-square. I have decided to build it with aluminum from Texas Towers. The bottom section will be 1.625 and reduce 1/8 per section above that with the top peice being .875. How much do I need to overlap or telescope into each section for mechanical strength ??.. I am thinking 6 to 12 inches. _______________________________________________ See: http://www.mscomputer.com for "Self Supporting Towers", "Wireless Weather Stations", and lot's more. Call Toll Free, 1-800-333-9041 with any questions and ask for Sherman, W2FLA. _______________________________________________ TowerTalk mailing list TowerTalk@contesting.com http://lists.contesting.com/mailman/listinfo/towertalk |
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