In a message dated 6/14/01 4:50:26 PM Pacific Daylight Time, n4kg@juno.com
writes:
> What is the rated lifting capacity of the Rohn Gin Pole?
It's rated to handle 25G and 45G - that's it. Since a 45G section weighs
70 pounds, it's rated at 140 pounds safe working load.
> Another idea would be to use the Rohn Gin Pole to raise
> and install (either inside the tower or strapped to the outside)
> a long thick wall aluminum mast with an attached Block
> and Tackle. Then use this heavier duty mast to raise the
> heavy steel mast.
My suggested way to haul up heavy loads and masts is to have a second,
more robust ginpole. The one I use is the WB0W version. The leg fixture is
very heavy and stout and will even handle 55G which the Rohn will not. Then I
use a 15-foot aluminum tube (2" 6061 and 1/4" wall) for the ginpole mast.
It'll handle big masts and big loads that the Rohn can't.
>
> The BEST idea is to install the heavy mast when only
> 20 or 30 ft of tower is assembled, either by walking it up
> or gin pole or gin pole on a separate R25 tower 10 ft higher,
> strapped alongside the BIG tower going up.
>
> The scariest thing I ever did on a tower was install a 20 ft
> 1/4 inch wall steel mast in a 130 ft tower using a Rohn
> Gin pole with NO mechanical advantage. Never again!
You're right. Around here, we call that a high "pucker factor".
Cheers, Steve K7LXC
Tower Tech
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