[TowerTalk] EHS cable and torque bars

[Steve Maki]

Destroying the bracket? What are you talking about? 1/4" EHS is 
SPECIFIED on tall R45's.

-Steve K8LX

On 2023-06-09 9:27 PM, Ron WV4P wrote:
> When the Catenary weight of 1/4" EHS changes the angle of the torque 
> bar to destroying the bracket VS resisting twist it all makes sense... 
> Adding larger shackles compounds the issue.
>
> Likely not an issue with your short tower but worth a call to Rohn.
>
> Ron, WV4P
>
> On Fri, Jun 9, 2023 at 8:21 PM Steve Maki <lists at oakcom.org> wrote:
>
>     That's idiotic, or at least short sighted.
>
>     Use the biggest pin shackle that will fit in the torque arm, and 1/4"
>     big grips (preforms) with thimble in the shackle. This makes it
>     easy to
>     remove a guy wire temporarily whenever needed.
>
>     As has been pointed out often, the torque arms don't do much for
>     rotational resistance, but if you have them, use them. It makes a
>     nice
>     install.
>
>     -Steve K8LX
>
>     On 2023-06-09 8:34 PM, Mike H wrote:
>     > I acquired some used Rohn 45G in very good shape and will be
>     going up
>     > 50 ft. Antenna will be stacked 2 x 9-el for 2m. I'm following
>     the Rohn
>     > engineering guidance very closely: base is a new R-SB45G buried
>     in the
>     > prescribed concrete block along with GAR30 guy anchors, also in
>     > concrete. I have the older style guy bracket for 45G that has (very
>     > expensive!) TB45D torque bars
>     >
>     <https://www.3starinc.com/rohn_45g_torque_bars_for_use_with_guy_bracket_r-tb45d.html>
>
>     > along with several hundred feet of brand-new 1/4 in EHS for the
>     guys.
>     > According to the Rohn instructions, however, I can't use EHS cable
>     > that's greater than 3/16 in:
>     >
>     > https://www.3starinc.com/manuals/ROHN_Torque_Bar.pdf
>     >
>     > This means I'd have to buy either smaller EHS cable or their
>     newer guy
>     > bracket that doesn't use torque bars. I'll do this if I have to,
>     but
>     > I'd sure like to understand why 1/4 in EHS is a deal-breaker for
>     the
>     > torque bars. QTH is north Florida so I want to make the setup as
>     > storm-proof as practical. Any insight appreciated.
>     >
>     > Mike WB2FKO
>     > _______________________________________________
>     >
>     >
>     >
>     > _______________________________________________
>     > TowerTalk mailing list
>     > TowerTalk at contesting.com
>     > http://lists.contesting.com/mailman/listinfo/towertalk
>     _______________________________________________
>
>
>
>     _______________________________________________
>     TowerTalk mailing list
>     TowerTalk at contesting.com
>     http://lists.contesting.com/mailman/listinfo/towertalk
>