[TowerTalk] Phillystran vibration damping?

[Paul Bittner]

Years ago I took down 8  240 foot Pirod towers at WDGY, Minneapolis, MN.

All had Phillystran and the vibration dampining units were on the bottom, 
just as the Philly left the steel cable.

So you have Frank LPL on top and these were on the bottom.  Only one pair 
per guy.

I have lots of them but have forgotten what size (2 different sizes)

Paul Bittner  W0AIH
----- Original Message ----- 
From: <donovanf at starpower.net>
To: <towertalk at contesting.com>
Sent: Sunday, July 16, 2006 9:38 AM
Subject: Re: [TowerTalk] Phillystran vibration damping?


> Hi Dick,
>
> I was very concerned that the vibration would damage my
> towers, so I took no chances.   The Preformed Line Products
> SVD dampeners completely solved the problem by installing
> one dampener at the top of each guy, within reach of the tower.
>
> As the PLP literature describes, some cases may require more
> extreme measures involving multiple SVDs, but one per guy
> was adequate in my case.
>
> 73!
> Frank
> W3LPL
>
> ---- Original message ----
>>Date: Sun, 16 Jul 2006 10:25:13 -0400
>>From: "Dick Green WC1M" <wc1m at msn.com>
>>Subject: Re: [TowerTalk] Phillystran vibration damping?
>>To: <donovanf at starpower.net>, <towertalk at contesting.com>
>>
>>Frank,
>>
>>Can you provide some detail on your solution? How many
> dampers did you need
>>and where on each guy were they placed? How did you
> determine these
>>parameters? If they were placed out of reach from the ground
> or tower, did
>>you have to disconnect each guy to install them?
>>
>>The product literature suggests vibration is potentially
> damaging to the
>>connecting hardware. Is this a real concern for typical ham
> intallations, or
>>is the primary issue the noise?
>>
>>Thank & 73,
>>Dick WC1M
>>
>>> -----Original Message-----
>>> From: donovanf at starpower.net
> [mailto:donovanf at starpower.net]
>>> Sent: Saturday, July 15, 2006 11:19 PM
>>> To: towertalk at contesting.com
>>> Subject: Re: [TowerTalk] Phillystran vibration damping?
>>>
>>> Blake,
>>>
>>> The product you're looking for is a Spiral Vibration
>>> Dampener, manufactured by Preformed Line Products.
>>>
>>>
> http://www.preformed.com/artsfest/files/literature/PLP_CommC
>>> atSec23.pdf
>>>
>>> I had the same problem on the guys on my 200 foot towers,
>>> and the SVD dampeners completely solved the problem.
>>> Philadelphia Rope Works, the manufacturer of Phillystran,
> was
>>> able to get them for me.
>>>
>>> Good luck!
>>>
>>> 73
>>> Frank
>>> W3LPL
>>>
>>> ---- Original message ----
>>> >Date: Sat, 15 Jul 2006 21:30:13 -0400
>>> >From: "Blake M." <n4gi at tampabay.rr.com>
>>> >Subject: [TowerTalk] Phillystran vibration damping?
>>> >To: <towertalk at contesting.com>
>>> >
>>> >I thought there has been previous discussion on this?  I've
> not
>>> been able to
>>> >get the right key words to get a match in the archives.....
> My
>>> tower sounds
>>> >like a violin in during big winds and it's time to fix it.
>>> >
>>> >73,
>>> >Blake N4GI
>>> >
>>> >
>>> >
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>>> >
>>> >
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>>>
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