Surely there is a rigger's trick for doing the initial pick as you describe
and then transferring the lifting point to the top of the stick as it
At K4JA, he had a crane put up 2 X 100 feet of super heavy duty AB-105 for
a 40M stack. The crane had no clearance above the top of the second piece,
so the connection had to be just below the top, and because it was not
vertical, the climbers had a very hard time getting the bolts in at the
joint. It would be worth trying to find a way.
73, Pete N4ZR
At 01:36 PM 8/8/2005, Tom Rauch wrote:
> > How did you sling them? My preference is to sling them
>on the top so
> > it'll hang dead vertical making installation easy. I
>looked at the N3OC photos and
> > they rigged it from the side. That's going to put it at an
>angle due to the
> > headache ball and it looks like mating the sections will
> > My question had to do with picking up 100' from the
>top, not down the
> > tower - I guess I didn't clarify that part. Of course
>picking it at 70 feet or so
> > is safer but I'm disinclined to do it because I think
>it'll make the
> > installation harder (I like things easier). Thoughts?
>We always grabbed them just comfortably above a balance
>point. I'm not sure how bad it would bow if you grabbed
>right at the top but from what I've seen the stuff is
>stronger than I ever thought. You might have to just try it
>and see how much it bends. The worse part is just when it
>initially comes off the ground.
>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
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