The max wind combined guy loads for a 100' tower can be around 4000#
downforce on the tower base (plus the tower weight) so something more
than 1" delrin will be required between the legs. That amount of force
obviously works ok with the tapered pier pin base, but the leg span of
straight R25 or larger will require some steel structure behind whatever
insulator is used. I think modifying a tapered pier pin base section
bottom plate for an insulator block of delrin/nylon would be easier/cheaper.
Grant KZ1W
On 9/1/2014 7:29 AM, J. Gordon Beattie, Jr., W2TTT wrote:
Bob, Steve et al,
Any thoughts on what might be a good approach to insulating a Rohn 25 tower
from the ground?
I was thinking of a pin base in a lower slab of nylon or delrin insulating
material sandwiched with another upper slab of insulating material that has
bolts into the tower legs. These could be bolted together at the corners.
When I say, "slab" I am thinking about 0.5-1.0 inches in thickness.
My concerns are that the might be stronger and possibly cheaper. Any
thoughts?
73,
Gordon, W2TTT
201.314.6964
-----Original Message-----
From: TowerTalk [mailto:towertalk-bounces@contesting.com] On Behalf Of Bob
Naumann W5OV
Sent: Saturday, August 30, 2014 2:33 AM
To: Steve Maki
Cc: towertalk@contesting.com; 'Bob Naumann W5OV'
Subject: Re: [TowerTalk] tower insulators
The insulators that you found through an obsolete link are no longer
available.
Sorry!
Bob W5OV
Array Solutions
On Fri, August 29, 2014 9:16 pm, Steve Maki wrote:
John,
Thinking about it, of course I've been thinking about it for a few
years now :)
Yes, I saw the Array Solutions solution, and WB0W's, both of which
look viable. I only tried contacting them via their web page contact
gadgets which aren't always monitored by online stores.
I'll try a direct email, thanks.
-Steve K8LX
On 8/28/2014 9:45 PM, john@kk9a.com wrote:
Are you getting back into contesting Steve? What about these?
http://www.arraysolutions.com/Products/towerinsulators.htm
Try emailing W5OV, BonN@arraysolutions.com
From: Steve Maki <lists@oakcom.org>
Date: Thu, 28 Aug 2014 18:24:33 -0400
Does anyone know if there is a currently available commercial leg
insulator for Rohn 45 tower? I've seen reference to products from
Array Solutions and WB0W, but didn't get replies to my inquires, and
I'm guessing they were/are not big sellers.
I can fab them myself from fiberglass rod and protect them with an
umbrella of some sort, but would rather save the time with an off the
shelf product.
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