In a message dated 4/16/04 11:42:15 PM Pacific Daylight Time,
billaustin@powernet.net writes:
> I'm ready to start stacking my tower. It's a freestanding 60' Trylon
> ST. There are six 10' sections. We are going to lift the first section
> into place using a backhoe. The plan is to then use a gin pole to raise
> the other 5 sections. I have a 12' piece of 2" pipe, and a Trylon gin
> pole kit from w9iix. I also have one of the Tower Jack pulley's (Tower
> Block) to go at the base for horizontal pulling. My big concern is the
> weight of the sections. The top section weighs about 120lbs and the
> bottom comes in around 240lbs.
>
First, the Tower Block isn't going to fit on your Trylon legs - they're
60 degree angle as opposed to the round-legged design that the TB is designed
for.
All you have to do (after making sure your ginpole is lashed to the tower
leg) is to use a double-block arrangement. You have the rope tied to the top
of the ginpole, it goes down to a pulley where the load is attached, the rope
goes up to another pulley at the top of the ginpole, and then down to the
ground. This is a block-and-tackle arrangement that'll give you a 2:1
mechanical
advantage.
Good luck! The last time we erected a Trylon like this, we put up 56 feet
in about 3 hours.
Cheers,
Steve K7LXC
TOWER TECH -
Professional tower services for commercial and amateur
888-833-3104
_______________________________________________
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.
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