[TowerTalk] HF winch

john at kk9a.com john at kk9a.com
Mon Feb 3 08:53:24 EST 2014


I am not a mechanical engineer, wouldn't the pull on the cable be
significantly more than the weight of the tower when tilting it?  Then you
plan on running a 55 amp motor with a 20 amp power supply?

John KK9A


To:	 towertalk reflector <towertalk at contesting.com>
Subject:	 [TowerTalk] HF winch
From:	 Mike Reublin NF4L <nf4l at comcast.net>
Date:	 Mon, 3 Feb 2014 07:46:27 -0500

I picked up a 2500 lb. rated 12V. winch from Harbor Freight intending to
use it
for tilting my HG-70HD tower. Weight with antennae and rotor etc. is between
1200  and 1300 lbs.  I was hoping to run it from a 20A power supply.

I plan on a pulley arrangement that will give me a 2:1 advantage. I could
go to
3:1.

If I read the specs right, the winch draws 55 amps when the load is 1000 lbs.
The duty cycle is 45 seconds on, 14 MINUTES off. Mounting is 2 bolts,
M8-1.25x35 mm.

Seems a tad sketchy. Your opinion?

73, Mike NF4L



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