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[TowerTalk] Ginpole for 20 foot sections

To: <towertalk@contesting.com>
Subject: [TowerTalk] Ginpole for 20 foot sections
From: k2av@contesting.com (Guy Olinger, K2AV)
Date: Wed, 13 Jun 2001 12:18:30 -0400
The reduction mechanism of a ganged pulley system is in the number of feet of 
rope the worker pulls in as a ratio to the distance the load travels. In a two 
to one system the worker pulls 200 feet of rope to lift the object 100 feet, 
thus the analog to a lever, and the advantage.

Two to one: rope tied at top block, through pulley at bottom block, through 
pulley at top block, to worker. 

Three to one: rope tied at bottom block, through pulley at top block, through 
pulley at bottom block, through pulley at top block, to worker.

Four to one: rope tied at top block, through pulley at bottom block, through 
pulley at top block, through pulley at bottom block, through pulley at top 
block, to worker.

73

> 
> From: Mike Gilmer - N2MG <n2mg@contesting.com>
To: <towertalk@contesting.com>
> Date: 2001/06/13 Wed AM 09:06:35 EDT
> To: towertalk@contesting.com
> Subject: Re: [TowerTalk] Ginpole for 20 foot sections
> 
> Nothing "magical" about it...
> 




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