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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 14:43:23 -0500
List-post: <towertalk@contesting.com">mailto:towertalk@contesting.com>
Boy was I off on this one!

Mike NF4L

On Feb 3, 2014, at 9:19 AM, Mike Reublin NF4L <nf4l@comcast.net> wrote:

> Hi John,
> 
> I'm not an engineer, nor have I stayed at a Holiday Inn Express lately... 
> ;-o} but I have seen one on TV.
> 
> The pull will at worst be at about a 45 degree angle, and using double 
> pulleys effectively halves the load to about 600 lbs. I don't think the pull 
> could be more than the weight, unless it were horizontal, then you'd have to 
> account for friction or the fact that the load is pinned in place by the base 
> bolts.
> 
> I don't know if that would actually cut the draw to something the PS could 
> handle, but the 55 amps is for a 1000 lb. pull. The power leads are 10 ga. 
> stranded.
> 
> Maybe we can get an engineer to chime in.
> 
> Mike NF4L
> 
> 
> On Feb 3, 2014, at 8:53 AM, john@kk9a.com wrote:
> 
>> 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

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