[TowerTalk] positive pull down for Tri-ex towers

[Joe Giacobello]

That is absolutely right about the top section hanging up when trying to 
lower the tower in a strong wind.  The wind tilts it so that it will not 
fall freely until the wind lets up.  If you had been cranking it down at 
the time that it hung up the cable would have gone slack, but when the 
wind let up, the top section would suddenly and rapidly fall until the 
cable was again taut.  Used to happen frequently with my old EZ-Way.  
Very dangerous and unnerving.  Positive pulldown is a real plus.

73, Joe
K2XX

Craig Clark wrote:
>> Date: Wed, 09 Jul 2008 17:14:58 -0500
>> From: chasm at texas.net
>> Subject: Re: [TowerTalk] Tri-Ex WT-51 Electric Winch with Pulldown
>>         Mechanismand RMC-1000
>> To: towertalk at contesting.com
>> Message-ID: <48753862.40502 at texas.net>
>> Content-Type: text/plain; charset=ISO-8859-1; format=flowed
>>
>> Dan Hearn wrote:
>>     
>>>   I think it is foolhardy to raise or lower a crankup when you are not
>>> watching it and in control of the operation. I have had a coax 
>>>       
>> snag and pull
>>     
>>> in two even when I am watching but not as observant as I should be.
>>>   73, Dan, N5AR
>>>       
>> Could not agree more.  still not sure why a pulldown is necessary as
>> gravity should certainly handle it
>>     
>
> Yes................maybe.
>
> I had a Triex W-67 and found that when the tower was fully extended, 
> the top section would bind during a "pull down" and not retract. The 
> top cable would go slack and the section would not lower.
>
> I solved it by cobbling up a positive pull down with a length of 
> aircraft cable attached to the bottom of the top section, a pulley at 
> the base and my come-a-long. I would tension the top section and 
> lower. Re-tension and then lower
> a bit more.
>
> All installations are different. I attributed mine to the top section 
> "tilting" a bit when extended even thought the installation was plumb.
>
>
>
>
> 73, Craig Clark, K1QX
>
>
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