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Re: [TowerTalk] OK for Rohn 45 Tiltover - Dutton-Lainson 2500?

To: kd4e@verizon.net
Subject: Re: [TowerTalk] OK for Rohn 45 Tiltover - Dutton-Lainson 2500?
From: Gary Schafer <garyschafer@comcast.net>
Reply-to: garyschafer@comcast.net
Date: Wed, 05 Oct 2005 23:18:02 -0400
List-post: <mailto:towertalk@contesting.com>

kd4e wrote:
>>Just tried a buch of searches and did not find the
>>Dutton Lainson B2503 brake winch.
>>
>>Is it fair to say that this is an equal or better replacement?
>>
>>FULTON K2550
>>http://www.fultonperformance.com/products.php?group=77&subgroup=80
> 
> 
> Can anyone explain, in laymen's terms, why there is a 1,000lb
> difference in "MAX LINE PULL" capacity between the "1st Layer"
> and a "Full Drum" as well as what that means in actual use?
> 
> MAX LINE PULL 1ST LAYER 2500 lbs.
> MAX LINE PULL FULL DRUM 1500 lbs.
> 
> 
It means that when the drum is empty you can pull 2500 lbs. with the 
winch. When the drum is full of cable you can only pull 1500 lbs. with 
the winch.
You have more mechanical advantage with an empty drum than with a full 
drum. In other words the full drum has a longer lever pulling on the 
cable than it has with the empty drum so it takes more effort to turn it 
with a full drum. The gears have more stress on them with the full drum.

Think of the cable at the drum attached to a lever that is say 3" long 
with a full drum (6" diameter drum of cable). With an empty drum that 
lever that the cable is attached to will be only a 1/2" long or so 1" 
diameter drum now.

73
Gary  K4FMX




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