Towertalk
[Top] [All Lists]

[TowerTalk] Raising mast?

To: <towertalk@contesting.com>
Subject: [TowerTalk] Raising mast?
From: tomwagner@mindspring.com (Tom Wagner)
Date: Sat, 23 May 1998 08:05:40 -0400
K7LXC said:
>
>      Attach a pulley at the bottom of the tower and run the haul rope
through
>it. This is called a snatch block and changes the direction of the haul
rope
>run from vertical to horizontal. Since you will need 260 pounds of pull to
>hoist the mast (130 pounds up the rope inside the tower and 130 pounds down
>the rope on the outside of the tower), you'll need a lawn tractor, winch or
a
>bunch of friends to pull it up.
>

If I remember my physics, the tension in the rope with an ideal pulley is
130 lbs.
With real-world friction, it would be higher.

Tom - N1MM
take


--
FAQ on WWW:               http://www.contesting.com/towertalkfaq.html
Submissions:              towertalk@contesting.com
Administrative requests:  towertalk-REQUEST@contesting.com
Problems:                 owner-towertalk@contesting.com
Search:                   http://www.contesting.com/km9p/search.htm

<Prev in Thread] Current Thread [Next in Thread>