[TowerTalk] Replacing cable on crankup

Barrie Smith barrie at centric.net
Wed Nov 17 17:17:12 PST 2010


----- Original Message ----- 
From: "Al Williams" <alwilliams at olywa.net>
To: <towertalk at contesting.com>
Sent: Wednesday, November 17, 2010 6:13 PM
Subject: Re: [TowerTalk] Replacing cable on crankup


> Whoa! I once tried to draw a sketch of the crankup winch, cabling, and
> pulleys on a LM472. It didn't turn out very readable. I think that I 
> learned
> that the only thing keeping the tower cranked up is the tension on the 
> winch
> from the cabling.
>
> If that is loosened to attach a replacement cable, wouldn't the tower come
> crashing down?

Well, yes, it would.  However, and this may not be good thinking on my part, 
I was thinking of attempting this with the tower fully retracted.

73, Barrie, W7ALW
>
> k7puc
>
>
> ----- Original Message ----- 
> From: "Alan Swinger" <awswinger at earthlink.net>
> To: "Barrie Smith" <barrie at centric.net>; <towertalk at contesting.com>
> Sent: Wednesday, November 17, 2010 2:33 PM
> Subject: Re: [TowerTalk] Replacing cable on crankup
>
>
>>I just did this w/ a US Tower TX 472 MDP . . . which has a poitive
>>pull-down. In fact, I pd the UST guys to do it - too hard for me. The
>>issues are many, but if a pos pull down you have a loaded spring, so
>>come-alongs are needed to take the pressure off. That said, if your tower
>>does not have the pull-down tension, go for it. - Alan K9MBQ
>>
>>
>> -----Original Message-----
>>>From: Barrie Smith <barrie at centric.net>
>>>Sent: Nov 17, 2010 3:25 PM
>>>To: towertalk at contesting.com
>>>Subject: [TowerTalk] Replacing cable on crankup
>>>
>>>Is there an easy way to replace the cable on a standing, crankup tower?
>>>
>>>It seems to me that it may be possible to attach the new cable to the old
>>>and then thread the new cable through the pullys.
>>>
>>>Or not?
>>>
>>>73, Barrie, W7ALW
>>>_______________________________________________
>>>
>>>
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>>
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>>
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