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[TowerTalk] Falling derrick

To: Tower Talk <towertalk@contesting.com>
Subject: [TowerTalk] Falling derrick
From: John Simmons <jasimmons@pinewooddata.com>
Date: Sat, 20 Mar 2021 09:50:02 -0500
List-post: <mailto:towertalk@contesting.com>
I'm planning a tower installation for the summer. It is an HDBX, sections 8-4 (40 feet) with the hinged base. A 70 pound yagi and a Tailtwister will be at the top with a very short mast. I want to build a falling derrick system for it.

I'm searching for answers to a couple questions:

 * How long should the lever be?
 * How much pulling force will I need to raise the tower? I realize
   that the force will be maximum when the tower just comes off the ground.

I found this reference:
https://comtech.ru/en/production/towers/tower-accessories/ct-s3ts/ct-s3ts-falling-derrick-tilt-up-method/

I'm neither good at physics nor math above algebra.

Comments?


--
73,
-de John NI0K in rural Debs, MN USA
https://www.qrz.com/db/NI0K

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