[TowerTalk] What rotor should I use

[Steve Dyer]

Any large beam, fiberglass tube or aluminum is going to potentially whip in wind. I've never seen any compelling evidence a SteppIR causes any more forces at the rotator than an *equivalently* sized Al beam.

73,
Steve



________________________________
 From: Joe Nuccio <k4nyy at yahoo.com>
To: Chris Pinholster <k4win at mac.com> 
Cc: "towertalk at contesting.com" <towertalk at contesting.com> 
Sent: Thursday, June 27, 2013 5:29 AM
Subject: Re: [TowerTalk] What rotor should I use
 

Hi Chris,

Thanks for the input and your experience.


The concern seems to that the 36' elements on the SeppIR start 'whipping' back and
forth while the antenna is being rotated which puts a lot of stress on the gears when it
comes to a stop. Apparently, this 'whipping' action is not of a concern on large beams
made out of aluminum.


73,  Joe  K4NYY



________________________________
From: Chris Pinholster <k4win at mac.com>
To: Joe Nuccio <k4nyy at yahoo.com> 
Cc: "towertalk at contesting.com" <towertalk at contesting.com> 
Sent: Wednesday, June 26, 2013 9:10 PM
Subject: Re: [TowerTalk] What rotor should I use


Joe,
I have a Force 12C4 on my MA-40 and use a Yaesu 2800 SDX. Works fine for the last five years.
Of course YMMV.

Chris  K4WIN

Sent from my iPad

On Jun 25, 2013, at 12:51 PM, Joe Nuccio <k4nyy at yahoo.com> wrote:

> I have a US Tower MA-40, a MARB and MAF. I also have a SteppIR 3-element 
> 
> beam. What rotor do I need?
> 
> 
> One knowledgeable person about rotors has suggested thatSteppIR's put a 
> 
> lot of torque back and forth on rotors. He thinks a HAM-IV will getdestroyed
> and a t2x is marginal 
> for the 3 elSteppIR because of the 16' boom and 36' 
> 
> long elements even when mounted inside a 
> tower on a rotor plate.  He wonders 
> 
> if a t2x can handle the rotation of the MA-40 tower and the SteppIR as well. He 
> knows of many people using the MA-40 rotatable tower as I  want to do, but, they
> aren't adding a SteppIR on top. He suggests abigger rotor or smaller antenna.
> 
> . 
> 
> I know some people who are using a HAM-IV to rotate a MA-40 tower, but, they do
> have smaller beams. Please let me have your experiences and suggestions.
> 
> 73  Joe  K4NYY
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> 
> 
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