[TowerTalk] US Tower IV-16 Inverted V mount issues

[Eric Dobrowansky K2WD]

I think the biggest problem with this design is the fact that the dipoles are pulling downward instead of horizontally, thus causing it to bind with the mast no matter how well lubricated it is.  



After further consideration, I have decided to abort using the IV16, and later this week I will lower the tower, climb up and unsnap the pully from it, and reattach the pulley to the upper tower section.   Then the next time I work on the yagi stack, I'll slide it off the mast. 



Thanks for all the replies. 

Eric 
K2CB 

----- Original Message ----- 
From: "Jim Nail" <james.nail at att.net> 
To: "Eric Dobrowansky K2WD" <k2wd at comcast.net>, towertalk-bounces at contesting.com, towertalk at contesting.com 
Sent: Tuesday, July 20, 2010 7:22:30 AM 
Subject: Re: [TowerTalk] US Tower IV-16 Inverted V mount issues 

Eric, I currently use this bracket on 72 ft tower. U used white lithium grease to line it and also I don't use as inv vee.I use as dipole support so I am not pulling down but instead straight out. 
Jim, WA2MBP 
Sent via BlackBerry by AT&T 

-----Original Message----- 
From: Eric Dobrowansky K2WD <k2wd at comcast.net> 
Sender: towertalk-bounces at contesting.com 
Date: Mon, 19 Jul 2010 21:12:58 
To: <towertalk at contesting.com> 
Subject: [TowerTalk] US Tower IV-16 Inverted V mount issues 





  Anyone using the US Tower IV-16 inverted V bracket?  



I have one installed here, and have already seen it spin around approx.  90-120 degrees  while rotating the antenna stack, and it almost yanked my dipole to shreads.   



Has anyone experienced this, and solved it, by using some sort of lubricant between the mast and IV mount?   Maybe grease like that which is put into the thrust bearing via the fitting? Or some other sort of lubricant? 



Otherwise,    I think I will be lowering the tower and moving the dipole pulley off the IV16 and re-attaching it to one of the cross-members of the upper section.  I used that method on my last tower for years. Just need an extra hand to hold the ropes away from the tower face when raising or lowering the tower. But at least you can turn the antenna stack without the fear of tearing up the wire antennas.   Then, the next time I bring the tower horizontal, trash the darn IV-16..... 



Eric 

K2CB 
_______________________________________________ 



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Thanks for all the replies. 

Eric 
K2CB 

----- Original Message ----- 
From: "Jim Nail" <james.nail at att.net> 
To: "Eric Dobrowansky K2WD" <k2wd at comcast.net>, towertalk-bounces at contesting.com, towertalk at contesting.com 
Sent: Tuesday, July 20, 2010 7:22:30 AM 
Subject: Re: [TowerTalk] US Tower IV-16 Inverted V mount issues 

Eric, I currently use this bracket on 72 ft tower. U used white lithium grease to line it and also I don't use as inv vee.I use as dipole support so I am not pulling down but instead straight out. 
Jim, WA2MBP 
Sent via BlackBerry by AT&T 

-----Original Message----- 
From: Eric Dobrowansky K2WD <k2wd at comcast.net> 
Sender: towertalk-bounces at contesting.com 
Date: Mon, 19 Jul 2010 21:12:58 
To: <towertalk at contesting.com> 
Subject: [TowerTalk] US Tower IV-16 Inverted V mount issues 





  Anyone using the US Tower IV-16 inverted V bracket?  



I have one installed here, and have already seen it spin around approx.  90-120 degrees  while rotating the antenna stack, and it almost yanked my dipole to shreads.   



Has anyone experienced this, and solved it, by using some sort of lubricant between the mast and IV mount?   Maybe grease like that which is put into the thrust bearing via the fitting? Or some other sort of lubricant? 



Otherwise,    I think I will be lowering the tower and moving the dipole pulley off the IV16 and re-attaching it to one of the cross-members of the upper section.  I used that method on my last tower for years. Just need an extra hand to hold the ropes away from the tower face when raising or lowering the tower. But at least you can turn the antenna stack without the fear of tearing up the wire antennas.   Then, the next time I bring the tower horizontal, trash the darn IV-16..... 



Eric 

K2CB 
_______________________________________________ 



_______________________________________________ 
TowerTalk mailing list 
TowerTalk at contesting.com 
http://lists.contesting.com/mailman/listinfo/towertalk