Towertalk
[Top] [All Lists]

Re: [TowerTalk] HF winch

To: towertalk reflector <towertalk@contesting.com>
Subject: Re: [TowerTalk] HF winch
From: Mike Reublin NF4L <nf4l@comcast.net>
Date: Mon, 3 Feb 2014 11:02:17 -0500
List-post: <towertalk@contesting.com">mailto:towertalk@contesting.com>
The winch is rated at 2500 lbs. with one layer of cable on the drum, dropping 
to 1184 with 6 turns. It has a brake, but no mention of a rating. The only 
thing it says is it's "Auto load-holding, dynamic".

Mike

On Feb 3, 2014, at 10:43 AM, Jim Lux <jimlux@earthlink.net> wrote:
> Sounds about right.
> 
> Bear in mind that every pass over a pulley adds some drag, not so much from 
> the pulley bearing (which is negligible with ball bearings) but from the 
> flexing of the cable.
> 
> What's the winch rating?  And is that with empty or full cable drum?
> These little details often don't show up in the descriptive copy... but as 
> cable piles up on the drum it increases the effective diameter of the drum, 
> reducing the maximum  pull force.  Manufacturers like to give specs with the 
> drum empty (all the cable pulled out).  For a small winch with a 2-3" 
> diameter drum, that fills up to 4-6" when full, that's a 2:1 difference in 
> pull force.
> 
> Does the winch have a ratchet or self braking scheme to prevent it from 
> freewheeling and paying out the cable if you lose power? (e.g. when the 
> circuit breaker trips)
> 
> 
> _______________________________________________
> 
> 
> 
> _______________________________________________
> TowerTalk mailing list
> TowerTalk@contesting.com
> http://lists.contesting.com/mailman/listinfo/towertalk

_______________________________________________



_______________________________________________
TowerTalk mailing list
TowerTalk@contesting.com
http://lists.contesting.com/mailman/listinfo/towertalk

<Prev in Thread] Current Thread [Next in Thread>