[TowerTalk] [Bulk] Re: tower insulators

[Bill Aycock]

Pardon me, but this looks like a disaster watching for a place to happen.
Bill--W4BSG

-----Original Message----- 
From: w2ttt at att.net
Sent: Monday, September 01, 2014 11:22 AM
To: Stan Stockton ; Grant Saviers
Cc: Gordon Beattie ; towertalk at contesting.com ; comtechgroup at yahoogroups.com
Subject: Re: [TowerTalk] [Bulk] Re: tower insulators

Stan,
So you use 3/8 fiberglass rod into each leg and the rods go into the 
concrete?
If you have photos, that would be helpful.
73,
Gordon, W2TTT
201.314.6964





Sent from Samsung tablet

-------- Original message --------
From: Stan Stockton <wa5rtg at gmail.com>
Date: 2014/09/01  11:35  (GMT-05:00)
To: Grant Saviers <grants2 at pacbell.net>
Cc: "J. Gordon Beattie, Jr., W2TTT" <W2TTT at ATT.NET>,towertalk at contesting.com
Subject: Re: [TowerTalk] [Bulk] Re:  tower insulators

I have four 60 foot 25G towers that have a solid rod of fiberglass in each 
leg.  These towers were in guyed for several years in a pretty harsh 
environment on top of a mountain.  After having grade. 8 bolts break several 
times I then bridged the upper and lower sections on each leg with a piece 
of fiberglass plate which is something like 4 inches wide, a foot long and 
about. 3/8 thick. It is held with galvanized. U bolts.  After seeing the 
towers bend in about a. 60 mph wind, I used 3/8 fiberglass rod to guy them 
to small, homemade anchors - rod welded to a short piece of angle.  Each 
anchor is in about a bag of Quickcrete.

Sent from Stan's IPhone



> On Sep 1, 2014, at 10:12 AM, Grant Saviers <grants2 at pacbell.net> wrote:
>
> 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 at contesting.com] On Behalf Of 
>> Bob
>> Naumann W5OV
>> Sent: Saturday, August 30, 2014 2:33 AM
>> To: Steve Maki
>> Cc: towertalk at 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 at kk9a.com wrote:
>>>
>>>
>>>> Are you getting back into contesting Steve?  What about these?
>>>> http://www.arraysolutions.com/Products/towerinsulators.htm
>>>>
>>>>
>>>> Try emailing W5OV, BonN at arraysolutions.com
>>>>
>>>> From:    Steve Maki <lists at 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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