Author: Hans Hammarquist via TowerTalk <towertalk@contesting.com>
Date: Wed, 15 Oct 2014 23:26:25 -0400
If you look carefully at the picture you'll see that each bracket has a U-bolt grabbing the Z rod, thereby spreading the load to all three legs. I used (a home made) plate with three holes, one for e
Author: Hans Hammarquist via TowerTalk <towertalk@contesting.com>
Date: Sat, 18 Oct 2014 10:43:28 -0400
I really don't understand why it is a subject so hard to understand. A self-supporting tower will have certain forces on its legs from a wind pressure. Supplied with guy wires the forces from the win
An additional consideration in tilting up a tower in one piece is how much guying is needed. While Rohn 25 can be tilted up, it typically requires multiple levels of guying just to be tilted up. This
Author: TexasRF--- via TowerTalk <towertalk@contesting.com>
Date: Sat, 18 Oct 2014 12:11:22 -0400
Hi Rick, I have used the falling derrick system on towers up to 60ft. I am not familiar with the tipping point phenomenon so you might elaborate on that a bit. 73, Gerald K5GW In a message dated 10/1
73, Gerald K5GW For example, on Field Day I use 30 feet of 11 inch aluminum tower as a falling derrick to erect 40 feet of same kind of tower with a 2 element SteppIR on top plus low band wires. An "
Author: GALE STEWARD via TowerTalk <towertalk@contesting.com>
Date: Sat, 18 Oct 2014 19:13:16 -0700
FYI... My 60ft R25 uses the falling derrick method. W3GM had four 100 footers that used this method. W3EA presently has several and N2TK uses this method for his R45 tower. 73, Stew K3ND Hi Rick, I h
I have a hard time, like you, understanding why some folks think guying any self supporting tower is a bad idea. Some folks over analyze and over engineer something that has been successfully done fo
I have taken down a 40 ft tower with legs on 14 ft centers. It is the bottom 40 ft of a 100 ft tower that had a failure and crashed down. I took it down, transported it to my ranch and reassembled it
I previously stated I have a tilt-over/crank-up tower with one set of guys at the top of the bottom section. Out of consideration for loading of the cable-pulley-winch system I wouldn't put any guys