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@att.net>
To: "Eric Dobrowansky K2WD" <k2wd@comcast.net>,
towertalk-bounces@contesting.com, towertalk@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@comcast.net>
Sender: towertalk-bounces@contesting.com
Date: Mon, 19 Jul 2010 21:12:58
To: <towertalk@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@contesting.com
http://lists.contesting.com/mailman/listinfo/towertalk
Thanks for all the replies.
Eric
K2CB
----- Original Message -----
From: "Jim Nail" <james.nail@att.net>
To: "Eric Dobrowansky K2WD" <k2wd@comcast.net>,
towertalk-bounces@contesting.com, towertalk@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@comcast.net>
Sender: towertalk-bounces@contesting.com
Date: Mon, 19 Jul 2010 21:12:58
To: <towertalk@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@contesting.com
http://lists.contesting.com/mailman/listinfo/towertalk
_______________________________________________
_______________________________________________
TowerTalk mailing list
TowerTalk@contesting.com
http://lists.contesting.com/mailman/listinfo/towertalk
|