There are no adequate documents for TA-55 on the net or from Rohn other than a
depiction / illustration of the part.
Ive consulted a PE with extensive tower experience and we have made a plan.
This will be used on a new fixed tower.
Thanks for everyone's efforts.
-Charlie N1RR
> On January 6, 2017 at 6:32 PM Jim Thomson <jim.thom@telus.net> wrote:
>
>
> Date: Thu, 5 Jan 2017 17:28:44 +0000 (UTC)
> From: GEO Badger <w3ab@yahoo.com>
> To: "towertalk@contesting.com" <towertalk@contesting.com>
> Subject: Re: [TowerTalk] Datasheet for Rohn TA-55
>
> Charlie,
> I assume you want one with dimensions?
>
> Here is a page from their 55G catalog, but no dim.
> http://www.w3ab.org/Documents/ROHN/Rohn%20TA55.pdf
>
> ## heres the part that I dont get. The 6 point guy system will reduce on
> the tower
> where the..cue rack is installed... almost down to nothing. Is torque even
> an issue ?
>
> ## these rotating towers all use rings..and the typ 3 guy wires per
> ring..are attached to the
> ring.... not to the tower. IE: There is nothing to stop the tower from
> torquing at all !
> The guy wires on the rotating towers just hold up and support the tower, they
> dont provide
> any torque redux at all. Then folks install 188-220 ft tall rotating
> tower assys... with the
> usual myriad of large HF yagis on them, typ with a 80m yagi at the very top.
>
> ## meanwhile the rotor is at the very bottom, like on the K0XG setups. The
> tower appears
> to me to be one big.... mother of all torque wrenches. The myriad of yagis
> are all bolted to
> the same tower face too. How much to these rotating towers actually twist in
> high winds ???
>
> ## If twist is a non issue on a rotating tower, then why even mess with the
> ...cue-rack..aka
> rohn TA55 assy at all ?? What am I missing here ?
>
> Jim VE7RF
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