[TowerTalk] Rotator and Beam advice requested

[Matt Lovewell]

Hi Chris,

That's a heck of a lot of wind.  I would ask SteppIR for the "new" wind load specs for the DB36.  They have several pages of information on the beam listing LOTS of specs that are very informative.  Among that information you will see that the paper specs far exceed the 55G paper specs for that sort of wind.  I've seen MUCH MUCH worse survive, so not sure if it is a concern for you, but thought I should mention it.  Otherwise I think SteppIR makes an awesome product, and they get out amazingly.  I've been treated very well by their team and tech support when I had some issues with my DB-11.

I can't say for sure on the rotator, but with that kind of wind and that size of beam I'd be thinking very hard about a K0XG ring rotator.  Whatever you pick it is going to have to be a big dog, and when rotators get big they usually slow down, so keep rotation speed in mind as well if that matters to you.

Best,

Matt - W0MLD

> On Aug 19, 2016, at 7:44 PM, Chris Hoelzle <choelzle at cox.net> wrote:
> 
> Hello All. I am putting up a 80 foot Rohn 55G. I am in a 115 mph wind zone.
> 
> 
> 
> I need Beam advice - I have just about settled on a StepIR DB36. Even though
> the specs show 100 mph for the beam, in talking to the factory, I am told
> "it will be fine" as long as you retract the elements in high wind. Is that
> true or should I go a different direction?
> 
> 
> 
> I like the simplicity of the StepIR as my alternative will be multiple beams
> and ring rotators and all that fun.
> 
> 
> 
> Second question - Assuming I go with the 55G and the DB36, can anyone guide
> me to a good reliable rotator that I won't have to rebuild every year.
> 
> 
> 
> Thanks so much
> 
> 
> 
> NN6CH
> 
> Chris Hoelzle 
> choelzle at cox.net 
> Laguna Niguel, CA 
> 
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