[TowerTalk] Opposing boom to mast plates?

Stan Stockton wa5rtg at gmail.com
Sun Sep 17 20:33:00 EDT 2023


Seems to me if you really believe mounting antennas on opposite sides of the mast is going to make a difference in whether the mast bends you already have a problem regardless of how you mount the antennas. I would think mounting the top antenna just a few inches lower would make more difference.

73…Stan, K5GO

> On Sep 17, 2023, at 7:22 PM, Chuck Dietz <w5prchuck at gmail.com> wrote:
> 
> Well my masts are very heavy. Weight of the antennas is not a real factor.
> And saying someone is not an engineer doesn’t help either.
> I believe It is a fact that the wind forces on Yagi antennas pointing in
> the same direction are transmitted to the mast in the exact same manner
> regardless of which side of the mast they are clamped to. It is a fallacy
> to think that they would exert force in the opposite directions and cancel.
> 
> Chuck W5PR
> 
> On Sun, Sep 17, 2023 at 4:03 PM <k7lxc at aol.com> wrote:
> 
>>> They were minimizing eccentric loads off the vertical centerline by
>> putting one on either side. It won't do anything for reducing turning
>> torque or wind loading, of course.
>> 
>>    Looks like you're not a Professional Engineer.
>> 
>> Cheers,
>> Steve      K7LXC
>> TOWER TECH
>> 
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