[TowerTalk] Falling derrick

[John Simmons]

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